47540731 has 6 divisors (see below), whose sum is σ = 55302540. Its totient is φ = 40749156.

The previous prime is 47540719. The next prime is 47540737. The reversal of 47540731 is 13704574.

It is not a de Polignac number, because 47540731 - 2⁹ = 47540219 is a prime.

It is a super-2 number, since 2×47540731² = 4520242208028722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47540693 and 47540702.

It is not an unprimeable number, because it can be changed into a prime (47540737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 485061 + ... + 485158.

It is an arithmetic number, because the mean of its divisors is an integer number (9217090).

Almost surely, 2^47540731 is an apocalyptic number.

47540731 is a deficient number, since it is larger than the sum of its proper divisors (7761809).

47540731 is an equidigital number, since it uses as much as digits as its factorization.

47540731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970233 (or 970226 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 47540731 is about 6894.9786801701. The cubic root of 47540731 is about 362.2613087401.

The spelling of 47540731 in words is "forty-seven million, five hundred forty thousand, seven hundred thirty-one".