4521900 has 36 divisors (see below), whose sum is σ = 13084232. Its totient is φ = 1205760.

The previous prime is 4521899. The next prime is 4521929. The reversal of 4521900 is 91254.

It is a super-2 number, since 2×4521900² = 40895159220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7237 + ... + 7836.

Almost surely, 2^4521900 is an apocalyptic number.

It is an amenable number.

4521900 is an abundant number, since it is smaller than the sum of its proper divisors (8562332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4521900 is a wasteful number, since it uses less digits than its factorization.

4521900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15090 (or 15083 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4521900 is about 2126.4759580113. The cubic root of 4521900 is about 165.3637521352.

It can be divided in two parts, 45 and 21900, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 4521900 in words is "four million, five hundred twenty-one thousand, nine hundred".