155641560 has 32 divisors (see below), whose sum is σ = 466925040. Its totient is φ = 41504384.

The previous prime is 155641543. The next prime is 155641609. The reversal of 155641560 is 65146551.

155641560 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648387 + ... + 648626.

Almost surely, 2^155641560 is an apocalyptic number.

155641560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155641560 is an abundant number, since it is smaller than the sum of its proper divisors (311283480).

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

155641560 is a wasteful number, since it uses less digits than its factorization.

155641560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297027 (or 1297023 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 155641560 is about 12475.6386610065. The cubic root of 155641560 is about 537.9086461527.

The spelling of 155641560 in words is "one hundred fifty-five million, six hundred forty-one thousand, five hundred sixty".