51477449 has 2 divisors, whose sum is σ = 51477450. Its totient is φ = 51477448.

The previous prime is 51477431. The next prime is 51477457. The reversal of 51477449 is 94477415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31719424 + 19758025 = 5632^2 + 4445^2 .

It is a cyclic number.

It is not a de Polignac number, because 51477449 - 2²⁴ = 34700233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51477409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25738724 + 25738725.

It is an arithmetic number, because the mean of its divisors is an integer number (25738725).

Almost surely, 2^51477449 is an apocalyptic number.

It is an amenable number.

51477449 is a deficient number, since it is larger than the sum of its proper divisors (1).

51477449 is an equidigital number, since it uses as much as digits as its factorization.

51477449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 51477449 is about 7174.7786725445. The cubic root of 51477449 is about 371.9966301194.

The spelling of 51477449 in words is "fifty-one million, four hundred seventy-seven thousand, four hundred forty-nine".