47540637 has 12 divisors (see below), whose sum is σ = 68745820. Its totient is φ = 31658688.

The previous prime is 47540617. The next prime is 47540651. The reversal of 47540637 is 73604574.

It can be written as a sum of positive squares in 2 ways, for example, as 1490841 + 46049796 = 1221^2 + 6786^2 .

It is not a de Polignac number, because 47540637 - 2⁷ = 47540509 is a prime.

It is a super-2 number, since 2×47540637² = 4520224332731538, 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 (47540617) 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, 7689 + ... + 12417.

Almost surely, 2^47540637 is an apocalyptic number.

It is an amenable number.

47540637 is a deficient number, since it is larger than the sum of its proper divisors (21205183).

47540637 is a wasteful number, since it uses less digits than its factorization.

47540637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 47540637 is about 6894.9718636119. The cubic root of 47540637 is about 362.2610699794.

The spelling of 47540637 in words is "forty-seven million, five hundred forty thousand, six hundred thirty-seven".