2251574531 has 2 divisors, whose sum is σ = 2251574532. Its totient is φ = 2251574530.

The previous prime is 2251574513. The next prime is 2251574543. The reversal of 2251574531 is 1354751522.

Together with previous prime (2251574513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251574531 is a prime.

It is a super-2 number, since 2×2251574531² = 10139175737295739922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2251574491 and 2251574500.

It is not a weakly prime, because it can be changed into another prime (2251574131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125787265 + 1125787266.

It is an arithmetic number, because the mean of its divisors is an integer number (1125787266).

Almost surely, 2^2251574531 is an apocalyptic number.

2251574531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251574531 is an equidigital number, since it uses as much as digits as its factorization.

2251574531 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 2251574531 is about 47450.7590139505. The cubic root of 2251574531 is about 1310.6762879484.

The spelling of 2251574531 in words is "two billion, two hundred fifty-one million, five hundred seventy-four thousand, five hundred thirty-one".