137705501 has 4 divisors (see below), whose sum is σ = 140303772. Its totient is φ = 135107232.

The previous prime is 137705489. The next prime is 137705551. The reversal of 137705501 is 105507731.

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 108264025 + 29441476 = 10405^2 + 5426^2 .

It is a cyclic number.

It is not a de Polignac number, because 137705501 - 2¹⁰ = 137704477 is a prime.

It is a super-2 number, since 2×137705501² = 37925610011322002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137705551) 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, 1299056 + ... + 1299161.

It is an arithmetic number, because the mean of its divisors is an integer number (35075943).

Almost surely, 2^137705501 is an apocalyptic number.

It is an amenable number.

137705501 is a deficient number, since it is larger than the sum of its proper divisors (2598271).

137705501 is an equidigital number, since it uses as much as digits as its factorization.

137705501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598270.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 137705501 is about 11734.7987200463. The cubic root of 137705501 is about 516.3970625786.

The spelling of 137705501 in words is "one hundred thirty-seven million, seven hundred five thousand, five hundred one".