155715201 has 24 divisors (see below), whose sum is σ = 234823680. Its totient is φ = 99316800.

The previous prime is 155715179. The next prime is 155715211. The reversal of 155715201 is 102517551.

It is not a de Polignac number, because 155715201 - 2⁶ = 155715137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155715211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21696 + ... + 27966.

It is an arithmetic number, because the mean of its divisors is an integer number (9784320).

Almost surely, 2^155715201 is an apocalyptic number.

It is an amenable number.

155715201 is a deficient number, since it is larger than the sum of its proper divisors (79108479).

155715201 is a wasteful number, since it uses less digits than its factorization.

155715201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 155715201 is about 12478.5897039690. The cubic root of 155715201 is about 537.9934690086.

The spelling of 155715201 in words is "one hundred fifty-five million, seven hundred fifteen thousand, two hundred one".