54431512015997 has 2 divisors, whose sum is σ = 54431512015998. Its totient is φ = 54431512015996.

The previous prime is 54431512015973. The next prime is 54431512016033. The reversal of 54431512015997 is 79951021513445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54345514107481 + 85997908516 = 7371941^2 + 293254^2 .

It is a cyclic number.

It is not a de Polignac number, because 54431512015997 - 2³⁶ = 54362792539261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54431512015957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27215756007998 + 27215756007999.

It is an arithmetic number, because the mean of its divisors is an integer number (27215756007999).

Almost surely, 2^{54431512015997} is an apocalyptic number.

It is an amenable number.

54431512015997 is a deficient number, since it is larger than the sum of its proper divisors (1).

54431512015997 is an equidigital number, since it uses as much as digits as its factorization.

54431512015997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 56.

The spelling of 54431512015997 in words is "fifty-four trillion, four hundred thirty-one billion, five hundred twelve million, fifteen thousand, nine hundred ninety-seven".