1554155040 has 96 divisors (see below), whose sum is σ = 4988039616. Its totient is φ = 406615040.

The previous prime is 1554155039. The next prime is 1554155059. The reversal of 1554155040 is 405514551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1554154989 and 1554155007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5106 + ... + 55985.

It is an arithmetic number, because the mean of its divisors is an integer number (51958746).

Almost surely, 2^1554155040 is an apocalyptic number.

1554155040 is a gapful number since it is divisible by the number (10) 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 1554155040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494019808).

1554155040 is an abundant number, since it is smaller than the sum of its proper divisors (3433884576).

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

1554155040 is a wasteful number, since it uses less digits than its factorization.

1554155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61162 (or 61154 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1554155040 is about 39422.7731140264. The cubic root of 1554155040 is about 1158.3277132151.

Adding to 1554155040 its reverse (405514551), we get a palindrome (1959669591).

The spelling of 1554155040 in words is "one billion, five hundred fifty-four million, one hundred fifty-five thousand, forty".