157205555 has 8 divisors (see below), whose sum is σ = 203158032. Its totient is φ = 116090208.

The previous prime is 157205539. The next prime is 157205561. The reversal of 157205555 is 555502751.

157205555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 157205555 - 2⁴ = 157205539 is a prime.

It is a Duffinian 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, 1209209 + ... + 1209338.

It is an arithmetic number, because the mean of its divisors is an integer number (25394754).

Almost surely, 2^157205555 is an apocalyptic number.

157205555 is a deficient number, since it is larger than the sum of its proper divisors (45952477).

157205555 is a wasteful number, since it uses less digits than its factorization.

157205555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418565.

The product of its (nonzero) digits is 43750, while the sum is 35.

The square root of 157205555 is about 12538.1639405457. The cubic root of 157205555 is about 539.7044049795.

The spelling of 157205555 in words is "one hundred fifty-seven million, two hundred five thousand, five hundred fifty-five".