64100051 has 4 divisors (see below), whose sum is σ = 64126392. Its totient is φ = 64073712.

The previous prime is 64099999. The next prime is 64100083. The reversal of 64100051 is 15000146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64100051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64100551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9101 + ... + 14526.

It is an arithmetic number, because the mean of its divisors is an integer number (16031598).

Almost surely, 2^64100051 is an apocalyptic number.

64100051 is a deficient number, since it is larger than the sum of its proper divisors (26341).

64100051 is a wasteful number, since it uses less digits than its factorization.

64100051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26340.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 64100051 is about 8006.2507455113. The cubic root of 64100051 is about 400.2083310599.

Adding to 64100051 its reverse (15000146), we get a palindrome (79100197).

The spelling of 64100051 in words is "sixty-four million, one hundred thousand, fifty-one".