5251400505 has 80 divisors (see below), whose sum is σ = 10179815184. Its totient is φ = 2574581760.

The previous prime is 5251400501. The next prime is 5251400509. The reversal of 5251400505 is 5050041525.

5251400505 is a `hidden beast` number, since 5 + 251 + 400 + 5 + 0 + 5 = 666.

5251400505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5251400501) and next prime (5251400509).

It can be written as a sum of positive squares in 8 ways, for example, as 88115769 + 5163284736 = 9387^2 + 71856^2 .

It is not a de Polignac number, because 5251400505 - 2² = 5251400501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5251400501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1351165 + ... + 1355045.

Almost surely, 2^5251400505 is an apocalyptic number.

It is an amenable number.

5251400505 is a deficient number, since it is larger than the sum of its proper divisors (4928414679).

5251400505 is a wasteful number, since it uses less digits than its factorization.

5251400505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 5251400505 is about 72466.5474891691. The cubic root of 5251400505 is about 1738.1678545028.

The spelling of 5251400505 in words is "five billion, two hundred fifty-one million, four hundred thousand, five hundred five".