64160251 has 4 divisors (see below), whose sum is σ = 64628712. Its totient is φ = 63691792.

The previous prime is 64160249. The next prime is 64160269. The reversal of 64160251 is 15206146.

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 64160251 - 2¹ = 64160249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64164251) 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, 234025 + ... + 234298.

It is an arithmetic number, because the mean of its divisors is an integer number (16157178).

Almost surely, 2^64160251 is an apocalyptic number.

64160251 is a deficient number, since it is larger than the sum of its proper divisors (468461).

64160251 is a wasteful number, since it uses less digits than its factorization.

64160251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468460.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 64160251 is about 8010.0094257123. The cubic root of 64160251 is about 400.3335779870. Note that the first 3 decimals are identical.

Adding to 64160251 its reverse (15206146), we get a palindrome (79366397).

The spelling of 64160251 in words is "sixty-four million, one hundred sixty thousand, two hundred fifty-one".