5166700621 has 2 divisors, whose sum is σ = 5166700622. Its totient is φ = 5166700620.

The previous prime is 5166700507. The next prime is 5166700631. The reversal of 5166700621 is 1260076615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4871342025 + 295358596 = 69795^2 + 17186^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166700621 - 2⁷ = 5166700493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5166700631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583350310 + 2583350311.

It is an arithmetic number, because the mean of its divisors is an integer number (2583350311).

Almost surely, 2^5166700621 is an apocalyptic number.

It is an amenable number.

5166700621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166700621 is an equidigital number, since it uses as much as digits as its factorization.

5166700621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 5166700621 is about 71879.7650316137. The cubic root of 5166700621 is about 1728.7721829157.

The spelling of 5166700621 in words is "five billion, one hundred sixty-six million, seven hundred thousand, six hundred twenty-one".