64162251 has 12 divisors (see below), whose sum is σ = 92749800. Its totient is φ = 42742080.

The previous prime is 64162247. The next prime is 64162283. The reversal of 64162251 is 15226146.

It is not a de Polignac number, because 64162251 - 2² = 64162247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64162211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17800 + ... + 21098.

It is an arithmetic number, because the mean of its divisors is an integer number (7729150).

Almost surely, 2^64162251 is an apocalyptic number.

64162251 is a deficient number, since it is larger than the sum of its proper divisors (28587549).

64162251 is a wasteful number, since it uses less digits than its factorization.

64162251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466 (or 5463 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 64162251 is about 8010.1342685376. The cubic root of 64162251 is about 400.3377376696.

Adding to 64162251 its reverse (15226146), we get a palindrome (79388397).

The spelling of 64162251 in words is "sixty-four million, one hundred sixty-two thousand, two hundred fifty-one".