155057233 has 8 divisors (see below), whose sum is σ = 164466720. Its totient is φ = 145772640.

The previous prime is 155057213. The next prime is 155057239. The reversal of 155057233 is 332750551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155057233 - 2⁹ = 155056721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155057195 and 155057204.

It is not an unprimeable number, because it can be changed into a prime (155057239) 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, 28660 + ... + 33637.

It is an arithmetic number, because the mean of its divisors is an integer number (20558340).

Almost surely, 2^155057233 is an apocalyptic number.

It is an amenable number.

155057233 is a deficient number, since it is larger than the sum of its proper divisors (9409487).

155057233 is a wasteful number, since it uses less digits than its factorization.

155057233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62447.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 155057233 is about 12452.1979184399. The cubic root of 155057233 is about 537.2346429860.

The spelling of 155057233 in words is "one hundred fifty-five million, fifty-seven thousand, two hundred thirty-three".