45929421 has 6 divisors (see below), whose sum is σ = 66342510. Its totient is φ = 30619608.

The previous prime is 45929419. The next prime is 45929449. The reversal of 45929421 is 12492954.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 3861225 = 6486^2 + 1965^2 .

It is not a de Polignac number, because 45929421 - 2¹ = 45929419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45929491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2551626 + ... + 2551643.

It is an arithmetic number, because the mean of its divisors is an integer number (11057085).

Almost surely, 2^45929421 is an apocalyptic number.

It is an amenable number.

45929421 is a deficient number, since it is larger than the sum of its proper divisors (20413089).

45929421 is a wasteful number, since it uses less digits than its factorization.

45929421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103275 (or 5103272 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 45929421 is about 6777.1248328476. The cubic root of 45929421 is about 358.1214411715.

The spelling of 45929421 in words is "forty-five million, nine hundred twenty-nine thousand, four hundred twenty-one".