47531047 has 4 divisors (see below), whose sum is σ = 47587240. Its totient is φ = 47474856.

The previous prime is 47531023. The next prime is 47531059. The reversal of 47531047 is 74013574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74013574 = 2 ⋅37006787.

It is a cyclic number.

It is not a de Polignac number, because 47531047 - 2⁷ = 47530919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47532047) 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, 26808 + ... + 28525.

It is an arithmetic number, because the mean of its divisors is an integer number (11896810).

Almost surely, 2^47531047 is an apocalyptic number.

47531047 is a deficient number, since it is larger than the sum of its proper divisors (56193).

47531047 is an equidigital number, since it uses as much as digits as its factorization.

47531047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56192.

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

The square root of 47531047 is about 6894.2763942273. The cubic root of 47531047 is about 362.2367096461.

The spelling of 47531047 in words is "forty-seven million, five hundred thirty-one thousand, forty-seven".