64136553 has 16 divisors (see below), whose sum is σ = 92365056. Its totient is φ = 39352320.

The previous prime is 64136543. The next prime is 64136557. The reversal of 64136553 is 35563146.

It is not a de Polignac number, because 64136553 - 2¹² = 64132457 is a prime.

It is a super-4 number, since 4×64136553⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (64136557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12073 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (5772816).

Almost surely, 2^64136553 is an apocalyptic number.

It is an amenable number.

64136553 is a deficient number, since it is larger than the sum of its proper divisors (28228503).

64136553 is a wasteful number, since it uses less digits than its factorization.

64136553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864.

The product of its digits is 32400, while the sum is 33.

The square root of 64136553 is about 8008.5300149278. The cubic root of 64136553 is about 400.2842833263.

Adding to 64136553 its reverse (35563146), we get a palindrome (99699699).

The spelling of 64136553 in words is "sixty-four million, one hundred thirty-six thousand, five hundred fifty-three".