551655413 has 2 divisors, whose sum is σ = 551655414. Its totient is φ = 551655412.

The previous prime is 551655409. The next prime is 551655427. The reversal of 551655413 is 314556155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361684324 + 189971089 = 19018^2 + 13783^2 .

It is a cyclic number.

It is not a de Polignac number, because 551655413 - 2² = 551655409 is a prime.

It is a super-3 number, since 3×551655413³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551655473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275827706 + 275827707.

It is an arithmetic number, because the mean of its divisors is an integer number (275827707).

Almost surely, 2^551655413 is an apocalyptic number.

It is an amenable number.

551655413 is a deficient number, since it is larger than the sum of its proper divisors (1).

551655413 is an equidigital number, since it uses as much as digits as its factorization.

551655413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 35.

The square root of 551655413 is about 23487.3458057738. The cubic root of 551655413 is about 820.1424564120.

The spelling of 551655413 in words is "five hundred fifty-one million, six hundred fifty-five thousand, four hundred thirteen".