45219401 has 2 divisors, whose sum is σ = 45219402. Its totient is φ = 45219400.

The previous prime is 45219397. The next prime is 45219451. The reversal of 45219401 is 10491254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45212176 + 7225 = 6724^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 45219401 - 2² = 45219397 is a prime.

It is not a weakly prime, because it can be changed into another prime (45219451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609700 + 22609701.

It is an arithmetic number, because the mean of its divisors is an integer number (22609701).

Almost surely, 2^45219401 is an apocalyptic number.

It is an amenable number.

45219401 is a deficient number, since it is larger than the sum of its proper divisors (1).

45219401 is an equidigital number, since it uses as much as digits as its factorization.

45219401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 45219401 is about 6724.5372331485. The cubic root of 45219401 is about 356.2664571858.

The spelling of 45219401 in words is "forty-five million, two hundred nineteen thousand, four hundred one".