64120552 has 8 divisors (see below), whose sum is σ = 120226050. Its totient is φ = 32060272.

The previous prime is 64120477. The next prime is 64120601. The reversal of 64120552 is 25502146.

It can be written as a sum of positive squares in only one way, i.e., 55860676 + 8259876 = 7474^2 + 2874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×64120552² = 8222890377569408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4007527 + ... + 4007542.

Almost surely, 2^64120552 is an apocalyptic number.

It is an amenable number.

64120552 is a deficient number, since it is larger than the sum of its proper divisors (56105498).

64120552 is a wasteful number, since it uses less digits than its factorization.

64120552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015075 (or 8015071 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 64120552 is about 8007.5309552945. The cubic root of 64120552 is about 400.2509924740.

Adding to 64120552 its reverse (25502146), we get a palindrome (89622698).

The spelling of 64120552 in words is "sixty-four million, one hundred twenty thousand, five hundred fifty-two".