2499400051 has 2 divisors, whose sum is σ = 2499400052. Its totient is φ = 2499400050.

The previous prime is 2499400021. The next prime is 2499400081. The reversal of 2499400051 is 1500049942.

It is a balanced prime because it is at equal distance from previous prime (2499400021) and next prime (2499400081).

It is a cyclic number.

It is not a de Polignac number, because 2499400051 - 2¹³ = 2499391859 is a prime.

It is a super-2 number, since 2×2499400051² = 12494001229877605202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2499400021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249700025 + 1249700026.

It is an arithmetic number, because the mean of its divisors is an integer number (1249700026).

Almost surely, 2^2499400051 is an apocalyptic number.

2499400051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499400051 is an equidigital number, since it uses as much as digits as its factorization.

2499400051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2499400051 is about 49994.0001500180. Note that the first 3 decimals coincide. The cubic root of 2499400051 is about 1357.1002321360.

Adding to 2499400051 its reverse (1500049942), we get a palindrome (3999449993).

The spelling of 2499400051 in words is "two billion, four hundred ninety-nine million, four hundred thousand, fifty-one".