64552402 has 4 divisors (see below), whose sum is σ = 96828606. Its totient is φ = 32276200.

The previous prime is 64552393. The next prime is 64552427. The reversal of 64552402 is 20425546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64144081 + 408321 = 8009^2 + 639^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16138099 + ... + 16138102.

Almost surely, 2^64552402 is an apocalyptic number.

64552402 is a deficient number, since it is larger than the sum of its proper divisors (32276204).

64552402 is a wasteful number, since it uses less digits than its factorization.

64552402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32276203.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 64552402 is about 8034.4509457710. The cubic root of 64552402 is about 401.1475422189.

Adding to 64552402 its reverse (20425546), we get a palindrome (84977948).

The spelling of 64552402 in words is "sixty-four million, five hundred fifty-two thousand, four hundred two".