64123051 has 4 divisors (see below), whose sum is σ = 64477504. Its totient is φ = 63768600.

The previous prime is 64123049. The next prime is 64123069. The reversal of 64123051 is 15032146.

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

It is a cyclic number.

It is not a de Polignac number, because 64123051 - 2¹ = 64123049 is a prime.

It is a super-2 number, since 2×64123051² = 8223531339097202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64123021) 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, 176955 + ... + 177316.

It is an arithmetic number, because the mean of its divisors is an integer number (16119376).

Almost surely, 2^64123051 is an apocalyptic number.

64123051 is a deficient number, since it is larger than the sum of its proper divisors (354453).

64123051 is a wasteful number, since it uses less digits than its factorization.

64123051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354452.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 64123051 is about 8007.6869943823. The cubic root of 64123051 is about 400.2561921290.

Adding to 64123051 its reverse (15032146), we get a palindrome (79155197).

The spelling of 64123051 in words is "sixty-four million, one hundred twenty-three thousand, fifty-one".