54996509 has 4 divisors (see below), whose sum is σ = 55095804. Its totient is φ = 54897216.

The previous prime is 54996503. The next prime is 54996523. The reversal of 54996509 is 90569945.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2839225 + 52157284 = 1685^2 + 7222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54996509 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 (54996503) 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, 48812 + ... + 49925.

It is an arithmetic number, because the mean of its divisors is an integer number (13773951).

Almost surely, 2^54996509 is an apocalyptic number.

It is an amenable number.

54996509 is a deficient number, since it is larger than the sum of its proper divisors (99295).

54996509 is an equidigital number, since it uses as much as digits as its factorization.

54996509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99294.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 54996509 is about 7415.9631201888. The cubic root of 54996509 is about 380.2871997804.

The spelling of 54996509 in words is "fifty-four million, nine hundred ninety-six thousand, five hundred nine".