281225051 has 2 divisors, whose sum is σ = 281225052. Its totient is φ = 281225050.

The previous prime is 281225039. The next prime is 281225057. The reversal of 281225051 is 150522182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 281225051 - 2¹⁴ = 281208667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 281225051.

It is not a weakly prime, because it can be changed into another prime (281225057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140612525 + 140612526.

It is an arithmetic number, because the mean of its divisors is an integer number (140612526).

Almost surely, 2^281225051 is an apocalyptic number.

281225051 is a deficient number, since it is larger than the sum of its proper divisors (1).

281225051 is an equidigital number, since it uses as much as digits as its factorization.

281225051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 281225051 is about 16769.7659792855. The cubic root of 281225051 is about 655.1659746824.

The spelling of 281225051 in words is "two hundred eighty-one million, two hundred twenty-five thousand, fifty-one".