45717421 has 2 divisors, whose sum is σ = 45717422. Its totient is φ = 45717420.

The previous prime is 45717409. The next prime is 45717461. The reversal of 45717421 is 12471754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 1028196 = 6685^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 45717421 - 2⁷ = 45717293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45717461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22858710 + 22858711.

It is an arithmetic number, because the mean of its divisors is an integer number (22858711).

Almost surely, 2^45717421 is an apocalyptic number.

It is an amenable number.

45717421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45717421 is an equidigital number, since it uses as much as digits as its factorization.

45717421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 45717421 is about 6761.4658913582. The cubic root of 45717421 is about 357.5695882271.

The spelling of 45717421 in words is "forty-five million, seven hundred seventeen thousand, four hundred twenty-one".