551604013 has 2 divisors, whose sum is σ = 551604014. Its totient is φ = 551604012.

The previous prime is 551603999. The next prime is 551604017. The reversal of 551604013 is 310406155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379548324 + 172055689 = 19482^2 + 13117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551604013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551604017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275802006 + 275802007.

It is an arithmetic number, because the mean of its divisors is an integer number (275802007).

Almost surely, 2^551604013 is an apocalyptic number.

It is an amenable number.

551604013 is a deficient number, since it is larger than the sum of its proper divisors (1).

551604013 is an equidigital number, since it uses as much as digits as its factorization.

551604013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 551604013 is about 23486.2515740592. The cubic root of 551604013 is about 820.1169836074.

The spelling of 551604013 in words is "five hundred fifty-one million, six hundred four thousand, thirteen".