626552401 has 2 divisors, whose sum is σ = 626552402. Its totient is φ = 626552400.

The previous prime is 626552363. The next prime is 626552429. The reversal of 626552401 is 104255626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622552401 + 4000000 = 24951^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 626552401 - 2⁹ = 626551889 is a prime.

It is a super-2 number, since 2×626552401² = 785135822397729602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (626552471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313276200 + 313276201.

It is an arithmetic number, because the mean of its divisors is an integer number (313276201).

Almost surely, 2^626552401 is an apocalyptic number.

It is an amenable number.

626552401 is a deficient number, since it is larger than the sum of its proper divisors (1).

626552401 is an equidigital number, since it uses as much as digits as its factorization.

626552401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 626552401 is about 25031.0287643157. The cubic root of 626552401 is about 855.6952729530.

It can be divided in two parts, 62655 and 2401, that added together give a palindrome (65056).

The spelling of 626552401 in words is "six hundred twenty-six million, five hundred fifty-two thousand, four hundred one".