66251054 has 8 divisors (see below), whose sum is σ = 99448128. Its totient is φ = 33101680.

The previous prime is 66251021. The next prime is 66251069. The reversal of 66251054 is 45015266.

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

It is a super-2 number, since 2×66251054² = 8778404312221832, which contains 22 as substring.

It is a congruent number.

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, 8222 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (12431016).

Almost surely, 2^66251054 is an apocalyptic number.

66251054 is a deficient number, since it is larger than the sum of its proper divisors (33197074).

66251054 is a wasteful number, since it uses less digits than its factorization.

66251054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23850.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 66251054 is about 8139.4750444976. The cubic root of 66251054 is about 404.6357625475.

The spelling of 66251054 in words is "sixty-six million, two hundred fifty-one thousand, fifty-four".