157198546 has 8 divisors (see below), whose sum is σ = 235851660. Its totient is φ = 78581328.

The previous prime is 157198543. The next prime is 157198577. The reversal of 157198546 is 645891751.

157198546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 140067225 + 17131321 = 11835^2 + 4139^2 .

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

It is a super-2 number, since 2×157198546² = 49422765729028232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157198496 and 157198505.

It is not an unprimeable number, because it can be changed into a prime (157198543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10000 + ... + 20356.

Almost surely, 2^157198546 is an apocalyptic number.

157198546 is a deficient number, since it is larger than the sum of its proper divisors (78653114).

157198546 is a wasteful number, since it uses less digits than its factorization.

157198546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17948.

The product of its digits is 302400, while the sum is 46.

The square root of 157198546 is about 12537.8844307961. The cubic root of 157198546 is about 539.6963839644.

The spelling of 157198546 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred forty-six".