155538232 has 16 divisors (see below), whose sum is σ = 299516760. Its totient is φ = 75667104.

The previous prime is 155538217. The next prime is 155538233. The reversal of 155538232 is 232835551.

It is a super-2 number, since 2×155538232² = 48384283227371648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155538233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262438 + ... + 263029.

Almost surely, 2^155538232 is an apocalyptic number.

It is an amenable number.

155538232 is a deficient number, since it is larger than the sum of its proper divisors (143978528).

155538232 is a wasteful number, since it uses less digits than its factorization.

155538232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525510 (or 525506 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 155538232 is about 12471.4967826641. The cubic root of 155538232 is about 537.7895834188.

The spelling of 155538232 in words is "one hundred fifty-five million, five hundred thirty-eight thousand, two hundred thirty-two".