157206461 has 4 divisors (see below), whose sum is σ = 157309500. Its totient is φ = 157103424.

The previous prime is 157206431. The next prime is 157206479. The reversal of 157206461 is 164602751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164602751 = 37 ⋅4448723.

It can be written as a sum of positive squares in 2 ways, for example, as 81342361 + 75864100 = 9019^2 + 8710^2 .

It is a cyclic number.

It is not a de Polignac number, because 157206461 - 2⁶ = 157206397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157206431) 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, 49196 + ... + 52293.

It is an arithmetic number, because the mean of its divisors is an integer number (39327375).

Almost surely, 2^157206461 is an apocalyptic number.

It is an amenable number.

157206461 is a deficient number, since it is larger than the sum of its proper divisors (103039).

157206461 is a wasteful number, since it uses less digits than its factorization.

157206461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103038.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 157206461 is about 12538.2000701855. The cubic root of 157206461 is about 539.7054417775.

The spelling of 157206461 in words is "one hundred fifty-seven million, two hundred six thousand, four hundred sixty-one".