47532731 has 4 divisors (see below), whose sum is σ = 50328792. Its totient is φ = 44736672.

The previous prime is 47532691. The next prime is 47532757. The reversal of 47532731 is 13723574.

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 47532731 - 2¹⁴ = 47516347 is a prime.

It is a super-2 number, since 2×47532731² = 4518721032636722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47532791) 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, 1398005 + ... + 1398038.

It is an arithmetic number, because the mean of its divisors is an integer number (12582198).

Almost surely, 2^47532731 is an apocalyptic number.

47532731 is a deficient number, since it is larger than the sum of its proper divisors (2796061).

47532731 is a wasteful number, since it uses less digits than its factorization.

47532731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796060.

The product of its digits is 17640, while the sum is 32.

The square root of 47532731 is about 6894.3985234392. The cubic root of 47532731 is about 362.2409875476.

The spelling of 47532731 in words is "forty-seven million, five hundred thirty-two thousand, seven hundred thirty-one".