154491552 has 144 divisors (see below), whose sum is σ = 465611328. Its totient is φ = 48491520.

The previous prime is 154491551. The next prime is 154491553. The reversal of 154491552 is 255194451.

154491552 is a `hidden beast` number, since 15 + 4 + 4 + 91 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (154491551) and next prime (154491553).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (154491551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549652 + ... + 549932.

It is an arithmetic number, because the mean of its divisors is an integer number (3233412).

Almost surely, 2^154491552 is an apocalyptic number.

154491552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154491552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232805664).

154491552 is an abundant number, since it is smaller than the sum of its proper divisors (311119776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154491552 is a wasteful number, since it uses less digits than its factorization.

154491552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 392 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 154491552 is about 12429.4630616129. The cubic root of 154491552 is about 536.5805323658.

It can be divided in two parts, 1544 and 91552, that added together give a triangular number (93096 = T₄₃₁).

The spelling of 154491552 in words is "one hundred fifty-four million, four hundred ninety-one thousand, five hundred fifty-two".