1345572251 has 2 divisors, whose sum is σ = 1345572252. Its totient is φ = 1345572250.

The previous prime is 1345572233. The next prime is 1345572269. The reversal of 1345572251 is 1522755431.

It is a balanced prime because it is at equal distance from previous prime (1345572233) and next prime (1345572269).

It is a cyclic number.

It is not a de Polignac number, because 1345572251 - 2²⁶ = 1278463387 is a prime.

It is a super-2 number, since 2×1345572251² = 3621129365322414002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1345572551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672786125 + 672786126.

It is an arithmetic number, because the mean of its divisors is an integer number (672786126).

Almost surely, 2^1345572251 is an apocalyptic number.

1345572251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345572251 is an equidigital number, since it uses as much as digits as its factorization.

1345572251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 35.

The square root of 1345572251 is about 36682.0426230601. The cubic root of 1345572251 is about 1103.9998323509. Note that the first 3 decimals are identical.

The spelling of 1345572251 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, two hundred fifty-one".