64151131 has 4 divisors (see below), whose sum is σ = 69983064. Its totient is φ = 58319200.

The previous prime is 64151107. The next prime is 64151137. The reversal of 64151131 is 13115146.

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-64151131 is a prime.

It is a super-2 number, since 2×64151131² = 8230735217158322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64151137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2915950 + ... + 2915971.

It is an arithmetic number, because the mean of its divisors is an integer number (17495766).

Almost surely, 2^64151131 is an apocalyptic number.

64151131 is a deficient number, since it is larger than the sum of its proper divisors (5831933).

64151131 is a wasteful number, since it uses less digits than its factorization.

64151131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831932.

The product of its digits is 360, while the sum is 22.

The square root of 64151131 is about 8009.4401177610. The cubic root of 64151131 is about 400.3146087385.

Adding to 64151131 its reverse (13115146), we get a palindrome (77266277).

The spelling of 64151131 in words is "sixty-four million, one hundred fifty-one thousand, one hundred thirty-one".