54970987 has 2 divisors, whose sum is σ = 54970988. Its totient is φ = 54970986.

The previous prime is 54970973. The next prime is 54970999. The reversal of 54970987 is 78907945.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54970987 - 2⁷ = 54970859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54970987.

It is not a weakly prime, because it can be changed into another prime (54970087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27485493 + 27485494.

It is an arithmetic number, because the mean of its divisors is an integer number (27485494).

Almost surely, 2^54970987 is an apocalyptic number.

54970987 is a deficient number, since it is larger than the sum of its proper divisors (1).

54970987 is an equidigital number, since it uses as much as digits as its factorization.

54970987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 54970987 is about 7414.2421730073. The cubic root of 54970987 is about 380.2283645814.

The spelling of 54970987 in words is "fifty-four million, nine hundred seventy thousand, nine hundred eighty-seven".