53490068 has 24 divisors (see below), whose sum is σ = 95697000. Its totient is φ = 26155008.

The previous prime is 53490061. The next prime is 53490071. The reversal of 53490068 is 86009435.

It can be written as a sum of positive squares in 4 ways, for example, as 753424 + 52736644 = 868^2 + 7262^2 .

It is a super-2 number, since 2×53490068² = 5722374749289248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53490061) 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, 33758 + ... + 35306.

It is an arithmetic number, because the mean of its divisors is an integer number (3987375).

Almost surely, 2^53490068 is an apocalyptic number.

It is an amenable number.

53490068 is a deficient number, since it is larger than the sum of its proper divisors (42206932).

53490068 is a wasteful number, since it uses less digits than its factorization.

53490068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 53490068 is about 7313.6904501079. The cubic root of 53490068 is about 376.7827833545.

The spelling of 53490068 in words is "fifty-three million, four hundred ninety thousand, sixty-eight".