45254981 has 2 divisors, whose sum is σ = 45254982. Its totient is φ = 45254980.

The previous prime is 45254929. The next prime is 45254999. The reversal of 45254981 is 18945254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33756100 + 11498881 = 5810^2 + 3391^2 .

It is a cyclic number.

It is not a de Polignac number, because 45254981 - 2¹⁸ = 44992837 is a prime.

It is a super-2 number, since 2×45254981² = 4096026610620722, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45254921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22627490 + 22627491.

It is an arithmetic number, because the mean of its divisors is an integer number (22627491).

Almost surely, 2^45254981 is an apocalyptic number.

It is an amenable number.

45254981 is a deficient number, since it is larger than the sum of its proper divisors (1).

45254981 is an equidigital number, since it uses as much as digits as its factorization.

45254981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 45254981 is about 6727.1822481630. The cubic root of 45254981 is about 356.3598731172.

The spelling of 45254981 in words is "forty-five million, two hundred fifty-four thousand, nine hundred eighty-one".