155561332 has 12 divisors (see below), whose sum is σ = 273903616. Its totient is φ = 77303160.

The previous prime is 155561327. The next prime is 155561363. The reversal of 155561332 is 233165551.

155561332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155561332² = 48398656027228448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155561294 and 155561303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118644 + ... + 119947.

Almost surely, 2^155561332 is an apocalyptic number.

It is an amenable number.

155561332 is a deficient number, since it is larger than the sum of its proper divisors (118342284).

155561332 is a wasteful number, since it uses less digits than its factorization.

155561332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238758 (or 238756 counting only the distinct ones).

The product of its digits is 13500, while the sum is 31.

The square root of 155561332 is about 12472.4228600541. The cubic root of 155561332 is about 537.8162056503.

The spelling of 155561332 in words is "one hundred fifty-five million, five hundred sixty-one thousand, three hundred thirty-two".