66451050 has 48 divisors (see below), whose sum is σ = 183113280. Its totient is φ = 17719920.

The previous prime is 66451027. The next prime is 66451067. The reversal of 66451050 is 5015466.

It is a happy number.

66451050 is a `hidden beast` number, since 6 + 645 + 10 + 5 + 0 = 666.

It is a super-2 number, since 2×66451050² = 8831484092205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23262 + ... + 25961.

It is an arithmetic number, because the mean of its divisors is an integer number (3814860).

Almost surely, 2^66451050 is an apocalyptic number.

66451050 is an abundant number, since it is smaller than the sum of its proper divisors (116662230).

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

66451050 is a wasteful number, since it uses less digits than its factorization.

66451050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49244 (or 49233 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 66451050 is about 8151.7513455699. The cubic root of 66451050 is about 405.0425195414.

The spelling of 66451050 in words is "sixty-six million, four hundred fifty-one thousand, fifty".