45219451 has 2 divisors, whose sum is σ = 45219452. Its totient is φ = 45219450.

The previous prime is 45219401. The next prime is 45219457. The reversal of 45219451 is 15491254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45219451 - 2⁹ = 45218939 is a prime.

It is not a weakly prime, because it can be changed into another prime (45219457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609725 + 22609726.

It is an arithmetic number, because the mean of its divisors is an integer number (22609726).

Almost surely, 2^45219451 is an apocalyptic number.

45219451 is a deficient number, since it is larger than the sum of its proper divisors (1).

45219451 is an equidigital number, since it uses as much as digits as its factorization.

45219451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 45219451 is about 6724.5409508754. The cubic root of 45219451 is about 356.2665884961.

The spelling of 45219451 in words is "forty-five million, two hundred nineteen thousand, four hundred fifty-one".