47540643 has 4 divisors (see below), whose sum is σ = 63387528. Its totient is φ = 31693760.

The previous prime is 47540617. The next prime is 47540651. The reversal of 47540643 is 34604574.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 47540643 - 2⁵ = 47540611 is a prime.

It is a super-2 number, since 2×47540643² = 4520225473706898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47540693) 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, 7923438 + ... + 7923443.

It is an arithmetic number, because the mean of its divisors is an integer number (15846882).

Almost surely, 2^47540643 is an apocalyptic number.

47540643 is a deficient number, since it is larger than the sum of its proper divisors (15846885).

47540643 is a wasteful number, since it uses less digits than its factorization.

47540643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15846884.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 47540643 is about 6894.9722987116. The cubic root of 47540643 is about 362.2610852194.

The spelling of 47540643 in words is "forty-seven million, five hundred forty thousand, six hundred forty-three".