53329690 has 16 divisors (see below), whose sum is σ = 97073640. Its totient is φ = 21091840.

The previous prime is 53329681. The next prime is 53329693. The reversal of 53329690 is 9692335.

It can be written as a sum of positive squares in 4 ways, for example, as 40819321 + 12510369 = 6389^2 + 3537^2 .

It is a super-2 number, since 2×53329690² = 5688111670992200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53329693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29071 + ... + 30850.

Almost surely, 2^53329690 is an apocalyptic number.

53329690 is a deficient number, since it is larger than the sum of its proper divisors (43743950).

53329690 is a wasteful number, since it uses less digits than its factorization.

53329690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60017.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 53329690 is about 7302.7179871607. The cubic root of 53329690 is about 376.4058400874.

The spelling of 53329690 in words is "fifty-three million, three hundred twenty-nine thousand, six hundred ninety".