155605632 has 256 divisors, whose sum is σ = 524133120. Its totient is φ = 39813120.

The previous prime is 155605621. The next prime is 155605643. The reversal of 155605632 is 236506551.

It is an interprime number because it is at equal distance from previous prime (155605621) and next prime (155605643).

It is a super-2 number, since 2×155605632² = 48426225420238848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 155605593 and 155605602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2131548 + ... + 2131620.

It is an arithmetic number, because the mean of its divisors is an integer number (2047395).

Almost surely, 2^155605632 is an apocalyptic number.

155605632 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 155605632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262066560).

155605632 is an abundant number, since it is smaller than the sum of its proper divisors (368527488).

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

155605632 is a wasteful number, since it uses less digits than its factorization.

155605632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 155605632 is about 12474.1986516169. The cubic root of 155605632 is about 537.8672530332.

The spelling of 155605632 in words is "one hundred fifty-five million, six hundred five thousand, six hundred thirty-two".