137650261 has 12 divisors (see below), whose sum is σ = 165290880. Its totient is φ = 114178680.

The previous prime is 137650237. The next prime is 137650273. The reversal of 137650261 is 162056731.

It is not a de Polignac number, because 137650261 - 2⁵ = 137650229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137650061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43791 + ... + 46828.

It is an arithmetic number, because the mean of its divisors is an integer number (13774240).

Almost surely, 2^137650261 is an apocalyptic number.

It is an amenable number.

137650261 is a deficient number, since it is larger than the sum of its proper divisors (27640619).

137650261 is an equidigital number, since it uses as much as digits as its factorization.

137650261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90664 (or 90657 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 137650261 is about 11732.4448006372. Note that the first 3 decimals coincide. The cubic root of 137650261 is about 516.3280031517.

The spelling of 137650261 in words is "one hundred thirty-seven million, six hundred fifty thousand, two hundred sixty-one".