137457605 has 4 divisors (see below), whose sum is σ = 164949132. Its totient is φ = 109966080.

The previous prime is 137457601. The next prime is 137457623. The reversal of 137457605 is 506754731.

137457605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84953089 + 52504516 = 9217^2 + 7246^2 .

It is not a de Polignac number, because 137457605 - 2² = 137457601 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 (137457601) 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, 13745756 + ... + 13745765.

It is an arithmetic number, because the mean of its divisors is an integer number (41237283).

Almost surely, 2^137457605 is an apocalyptic number.

It is an amenable number.

137457605 is a deficient number, since it is larger than the sum of its proper divisors (27491527).

137457605 is an equidigital number, since it uses as much as digits as its factorization.

137457605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27491526.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 137457605 is about 11724.2315313201. The cubic root of 137457605 is about 516.0870055899.

The spelling of 137457605 in words is "one hundred thirty-seven million, four hundred fifty-seven thousand, six hundred five".