155151432 has 24 divisors (see below), whose sum is σ = 420201990. Its totient is φ = 51717120.

The previous prime is 155151427. The next prime is 155151433. The reversal of 155151432 is 234151551.

155151432 is a `hidden beast` number, since 1 + 5 + 515 + 143 + 2 = 666.

155151432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 106626276 + 48525156 = 10326^2 + 6966^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 155151396 and 155151405.

It is not an unprimeable number, because it can be changed into a prime (155151433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1077369 + ... + 1077512.

Almost surely, 2^155151432 is an apocalyptic number.

155151432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155151432 is an abundant number, since it is smaller than the sum of its proper divisors (265050558).

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

155151432 is a wasteful number, since it uses less digits than its factorization.

155151432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154893 (or 2154886 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 155151432 is about 12455.9797687697. The cubic root of 155151432 is about 537.3434129770.

The spelling of 155151432 in words is "one hundred fifty-five million, one hundred fifty-one thousand, four hundred thirty-two".