155751552 has 256 divisors, whose sum is σ = 533174400. Its totient is φ = 44236800.

The previous prime is 155751551. The next prime is 155751593. The reversal of 155751552 is 255157551.

155751552 is a `hidden beast` number, since 1 + 5 + 57 + 51 + 552 = 666.

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

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (155751551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646152 + ... + 646392.

Almost surely, 2^155751552 is an apocalyptic number.

155751552 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 155751552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266587200).

155751552 is an abundant number, since it is smaller than the sum of its proper divisors (377422848).

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

155751552 is a wasteful number, since it uses less digits than its factorization.

155751552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 274 counting only the distinct ones).

The product of its digits is 43750, while the sum is 36.

The square root of 155751552 is about 12480.0461537608. The cubic root of 155751552 is about 538.0353297879.

The spelling of 155751552 in words is "one hundred fifty-five million, seven hundred fifty-one thousand, five hundred fifty-two".