51577469 has 2 divisors, whose sum is σ = 51577470. Its totient is φ = 51577468.

The previous prime is 51577433. The next prime is 51577481. The reversal of 51577469 is 96477515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36445369 + 15132100 = 6037^2 + 3890^2 .

It is a cyclic number.

It is not a de Polignac number, because 51577469 - 2⁸ = 51577213 is a prime.

It is a super-2 number, since 2×51577469² = 5320470616891922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51577429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25788734 + 25788735.

It is an arithmetic number, because the mean of its divisors is an integer number (25788735).

Almost surely, 2^51577469 is an apocalyptic number.

It is an amenable number.

51577469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51577469 is an equidigital number, since it uses as much as digits as its factorization.

51577469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The square root of 51577469 is about 7181.7455399088. The cubic root of 51577469 is about 372.2374024188.

The spelling of 51577469 in words is "fifty-one million, five hundred seventy-seven thousand, four hundred sixty-nine".