45349021 has 2 divisors, whose sum is σ = 45349022. Its totient is φ = 45349020.

The previous prime is 45348997. The next prime is 45349027. The reversal of 45349021 is 12094354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44368921 + 980100 = 6661^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 45349021 - 2¹³ = 45340829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45349027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22674510 + 22674511.

It is an arithmetic number, because the mean of its divisors is an integer number (22674511).

Almost surely, 2^45349021 is an apocalyptic number.

It is an amenable number.

45349021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45349021 is an equidigital number, since it uses as much as digits as its factorization.

45349021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45349021 is about 6734.1681743182. The cubic root of 45349021 is about 356.6065413347.

The spelling of 45349021 in words is "forty-five million, three hundred forty-nine thousand, twenty-one".