2139572051 has 2 divisors, whose sum is σ = 2139572052. Its totient is φ = 2139572050.

The previous prime is 2139572021. The next prime is 2139572053. The reversal of 2139572051 is 1502759312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2139572051 - 2²² = 2135377747 is a prime.

It is a super-2 number, since 2×2139572051² = 9155537122840693202, which contains 22 as substring.

Together with 2139572053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2139572053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069786025 + 1069786026.

It is an arithmetic number, because the mean of its divisors is an integer number (1069786026).

Almost surely, 2^2139572051 is an apocalyptic number.

2139572051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139572051 is an equidigital number, since it uses as much as digits as its factorization.

2139572051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 2139572051 is about 46255.5083314409. The cubic root of 2139572051 is about 1288.5728364696.

The spelling of 2139572051 in words is "two billion, one hundred thirty-nine million, five hundred seventy-two thousand, fifty-one".