137172501 has 8 divisors (see below), whose sum is σ = 203218560. Its totient is φ = 91448316.

The previous prime is 137172499. The next prime is 137172583. The reversal of 137172501 is 105271731.

It is a happy number.

It is not a de Polignac number, because 137172501 - 2¹ = 137172499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5080463 = 137172501 / (1 + 3 + 7 + 1 + 7 + 2 + 5 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137174501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2540205 + ... + 2540258.

It is an arithmetic number, because the mean of its divisors is an integer number (25402320).

Almost surely, 2^137172501 is an apocalyptic number.

It is an amenable number.

137172501 is a deficient number, since it is larger than the sum of its proper divisors (66046059).

137172501 is an equidigital number, since it uses as much as digits as its factorization.

137172501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080472 (or 5080466 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 137172501 is about 11712.0664700983. The cubic root of 137172501 is about 515.7299492820.

The spelling of 137172501 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, five hundred one".