54949969 has 2 divisors, whose sum is σ = 54949970. Its totient is φ = 54949968.

The previous prime is 54949913. The next prime is 54949981. The reversal of 54949969 is 96994945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53100369 + 1849600 = 7287^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54949969 is a prime.

It is a super-2 number, since 2×54949969² = 6038998186201922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54949469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27474984 + 27474985.

It is an arithmetic number, because the mean of its divisors is an integer number (27474985).

Almost surely, 2^54949969 is an apocalyptic number.

It is an amenable number.

54949969 is a deficient number, since it is larger than the sum of its proper divisors (1).

54949969 is an equidigital number, since it uses as much as digits as its factorization.

54949969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 55.

The square root of 54949969 is about 7412.8246303282. The cubic root of 54949969 is about 380.1798986606.

The spelling of 54949969 in words is "fifty-four million, nine hundred forty-nine thousand, nine hundred sixty-nine".