64122553 has 4 divisors (see below), whose sum is σ = 69951888. Its totient is φ = 58293220.

The previous prime is 64122533. The next prime is 64122559. The reversal of 64122553 is 35522146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64122553 is a prime.

It is a super-2 number, since 2×64122553² = 8223403606475618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64122559) 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, 2914651 + ... + 2914672.

It is an arithmetic number, because the mean of its divisors is an integer number (17487972).

Almost surely, 2^64122553 is an apocalyptic number.

It is an amenable number.

64122553 is a deficient number, since it is larger than the sum of its proper divisors (5829335).

64122553 is a wasteful number, since it uses less digits than its factorization.

64122553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5829334.

The product of its digits is 7200, while the sum is 28.

The square root of 64122553 is about 8007.6558992005. The cubic root of 64122553 is about 400.2551559540.

Adding to 64122553 its reverse (35522146), we get a palindrome (99644699).

It can be divided in two parts, 641225 and 53, that added together give a triangular number (641278 = T₁₁₃₂).

The spelling of 64122553 in words is "sixty-four million, one hundred twenty-two thousand, five hundred fifty-three".