45993021 has 16 divisors (see below), whose sum is σ = 63768768. Its totient is φ = 29462400.

The previous prime is 45993011. The next prime is 45993023. The reversal of 45993021 is 12039954.

It is not a de Polignac number, because 45993021 - 2⁹ = 45992509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45993023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5451 + ... + 11031.

It is an arithmetic number, because the mean of its divisors is an integer number (3985548).

Almost surely, 2^45993021 is an apocalyptic number.

45993021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45993021 is a deficient number, since it is larger than the sum of its proper divisors (17775747).

45993021 is a wasteful number, since it uses less digits than its factorization.

45993021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 45993021 is about 6781.8154649032. The cubic root of 45993021 is about 358.2866658293.

The spelling of 45993021 in words is "forty-five million, nine hundred ninety-three thousand, twenty-one".