54997739 has 4 divisors (see below), whose sum is σ = 55564824. Its totient is φ = 54430656.

The previous prime is 54997727. The next prime is 54997741. The reversal of 54997739 is 93779945.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54997739 - 2¹² = 54993643 is a prime.

It is a super-2 number, since 2×54997739² = 6049502590224242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54997139) 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, 283397 + ... + 283590.

It is an arithmetic number, because the mean of its divisors is an integer number (13891206).

Almost surely, 2^54997739 is an apocalyptic number.

54997739 is a deficient number, since it is larger than the sum of its proper divisors (567085).

54997739 is an equidigital number, since it uses as much as digits as its factorization.

54997739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567084.

The product of its digits is 2143260, while the sum is 53.

The square root of 54997739 is about 7416.0460489401. The cubic root of 54997739 is about 380.2900348074.

The spelling of 54997739 in words is "fifty-four million, nine hundred ninety-seven thousand, seven hundred thirty-nine".