54947969 has 2 divisors, whose sum is σ = 54947970. Its totient is φ = 54947968.

The previous prime is 54947957. The next prime is 54947983. The reversal of 54947969 is 96974945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 16507969 = 6200^2 + 4063^2 .

It is a cyclic number.

It is not a de Polignac number, because 54947969 - 2²⁰ = 53899393 is a prime.

It is a super-2 number, since 2×54947969² = 6038558594449922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54947969.

It is not a weakly prime, because it can be changed into another prime (54947999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27473984 + 27473985.

It is an arithmetic number, because the mean of its divisors is an integer number (27473985).

Almost surely, 2^54947969 is an apocalyptic number.

It is an amenable number.

54947969 is a deficient number, since it is larger than the sum of its proper divisors (1).

54947969 is an equidigital number, since it uses as much as digits as its factorization.

54947969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 54947969 is about 7412.6897277574. The cubic root of 54947969 is about 380.1752861677.

The spelling of 54947969 in words is "fifty-four million, nine hundred forty-seven thousand, nine hundred sixty-nine".