155216560 has 40 divisors (see below), whose sum is σ = 368565696. Its totient is φ = 60764160.

The previous prime is 155216549. The next prime is 155216561. The reversal of 155216560 is 65612551.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (155216561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16881 + ... + 24400.

Almost surely, 2^155216560 is an apocalyptic number.

155216560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155216560 is an abundant number, since it is smaller than the sum of its proper divisors (213349136).

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

155216560 is a wasteful number, since it uses less digits than its factorization.

155216560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41341 (or 41335 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 155216560 is about 12458.5938211341. The cubic root of 155216560 is about 537.4185894368.

The spelling of 155216560 in words is "one hundred fifty-five million, two hundred sixteen thousand, five hundred sixty".