5755691521 has 2 divisors, whose sum is σ = 5755691522. Its totient is φ = 5755691520.

The previous prime is 5755691507. The next prime is 5755691531. The reversal of 5755691521 is 1251965575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4975327296 + 780364225 = 70536^2 + 27935^2 .

It is a cyclic number.

It is not a de Polignac number, because 5755691521 - 2²⁵ = 5722137089 is a prime.

It is a super-2 number, since 2×5755691521² = 66255969769822586882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5755691531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2877845760 + 2877845761.

It is an arithmetic number, because the mean of its divisors is an integer number (2877845761).

Almost surely, 2^5755691521 is an apocalyptic number.

It is an amenable number.

5755691521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5755691521 is an equidigital number, since it uses as much as digits as its factorization.

5755691521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472500, while the sum is 46.

The square root of 5755691521 is about 75866.2739364469. The cubic root of 5755691521 is about 1792.1148418085.

The spelling of 5755691521 in words is "five billion, seven hundred fifty-five million, six hundred ninety-one thousand, five hundred twenty-one".