47231551 has 2 divisors, whose sum is σ = 47231552. Its totient is φ = 47231550.

The previous prime is 47231537. The next prime is 47231567. The reversal of 47231551 is 15513274.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47231551 - 2⁵ = 47231519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47231521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23615775 + 23615776.

It is an arithmetic number, because the mean of its divisors is an integer number (23615776).

Almost surely, 2^47231551 is an apocalyptic number.

47231551 is a deficient number, since it is larger than the sum of its proper divisors (1).

47231551 is an equidigital number, since it uses as much as digits as its factorization.

47231551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 47231551 is about 6872.5214441281. The cubic root of 47231551 is about 361.4742808929.

It can be divided in two parts, 472 and 31551, that added together give a palindrome (32023).

The spelling of 47231551 in words is "forty-seven million, two hundred thirty-one thousand, five hundred fifty-one".