157198554 has 24 divisors (see below), whose sum is σ = 340860000. Its totient is φ = 52359048.

The previous prime is 157198543. The next prime is 157198577. The reversal of 157198554 is 455891751.

157198554 is a `hidden beast` number, since 1 + 5 + 7 + 1 + 98 + 554 = 666.

It is a super-2 number, since 2×157198554² = 49422770759381832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28947 + ... + 33945.

It is an arithmetic number, because the mean of its divisors is an integer number (14202500).

Almost surely, 2^157198554 is an apocalyptic number.

157198554 is an abundant number, since it is smaller than the sum of its proper divisors (183661446).

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

157198554 is a wasteful number, since it uses less digits than its factorization.

157198554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6754 (or 6751 counting only the distinct ones).

The product of its digits is 252000, while the sum is 45.

The square root of 157198554 is about 12537.8847498292. The cubic root of 157198554 is about 539.6963931196.

The spelling of 157198554 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred fifty-four".