54815087 has 2 divisors, whose sum is σ = 54815088. Its totient is φ = 54815086.

The previous prime is 54815081. The next prime is 54815129. The reversal of 54815087 is 78051845.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54815087 - 2¹⁴ = 54798703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54815087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54815081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27407543 + 27407544.

It is an arithmetic number, because the mean of its divisors is an integer number (27407544).

Almost surely, 2^54815087 is an apocalyptic number.

54815087 is a deficient number, since it is larger than the sum of its proper divisors (1).

54815087 is an equidigital number, since it uses as much as digits as its factorization.

54815087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 54815087 is about 7403.7211589849. The cubic root of 54815087 is about 379.8685764359.

The spelling of 54815087 in words is "fifty-four million, eight hundred fifteen thousand, eighty-seven".