157205554 has 8 divisors (see below), whose sum is σ = 257245488. Its totient is φ = 71457060.

The previous prime is 157205539. The next prime is 157205561. The reversal of 157205554 is 455502751.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572832 + ... + 3572875.

It is an arithmetic number, because the mean of its divisors is an integer number (32155686).

Almost surely, 2^157205554 is an apocalyptic number.

157205554 is a deficient number, since it is larger than the sum of its proper divisors (100039934).

157205554 is a wasteful number, since it uses less digits than its factorization.

157205554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145720.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 157205554 is about 12538.1639006674. The cubic root of 157205554 is about 539.7044038351.

The spelling of 157205554 in words is "one hundred fifty-seven million, two hundred five thousand, five hundred fifty-four".