54997145 has 16 divisors (see below), whose sum is σ = 76705920. Its totient is φ = 37071744.

The previous prime is 54997139. The next prime is 54997147. The reversal of 54997145 is 54179945.

It is a cyclic number.

It is not a de Polignac number, because 54997145 - 2¹⁰ = 54996121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54997096 and 54997105.

It is not an unprimeable number, because it can be changed into a prime (54997147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11252 + ... + 15381.

It is an arithmetic number, because the mean of its divisors is an integer number (4794120).

Almost surely, 2^54997145 is an apocalyptic number.

It is an amenable number.

54997145 is a deficient number, since it is larger than the sum of its proper divisors (21708775).

54997145 is a wasteful number, since it uses less digits than its factorization.

54997145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26704.

The product of its digits is 226800, while the sum is 44.

The square root of 54997145 is about 7416.0060005369. The cubic root of 54997145 is about 380.2886657021.

The spelling of 54997145 in words is "fifty-four million, nine hundred ninety-seven thousand, one hundred forty-five".