45521930 has 8 divisors (see below), whose sum is σ = 81939492. Its totient is φ = 18208768.

The previous prime is 45521923. The next prime is 45521941. The reversal of 45521930 is 3912554.

It can be written as a sum of positive squares in 2 ways, for example, as 37810201 + 7711729 = 6149^2 + 2777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×45521930² = 4144492221849800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45521893 and 45521902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276087 + ... + 2276106.

Almost surely, 2^45521930 is an apocalyptic number.

45521930 is a deficient number, since it is larger than the sum of its proper divisors (36417562).

45521930 is a wasteful number, since it uses less digits than its factorization.

45521930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552200.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 45521930 is about 6746.9941455436. The cubic root of 45521930 is about 357.0591955655.

The spelling of 45521930 in words is "forty-five million, five hundred twenty-one thousand, nine hundred thirty".