53449636 has 6 divisors (see below), whose sum is σ = 93536870. Its totient is φ = 26724816.

The previous prime is 53449633. The next prime is 53449657. The reversal of 53449636 is 63694435.

It can be written as a sum of positive squares in only one way, i.e., 45292900 + 8156736 = 6730^2 + 2856^2 .

It is not an unprimeable number, because it can be changed into a prime (53449633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6681201 + ... + 6681208.

Almost surely, 2^53449636 is an apocalyptic number.

It is an amenable number.

53449636 is a deficient number, since it is larger than the sum of its proper divisors (40087234).

53449636 is a wasteful number, since it uses less digits than its factorization.

53449636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362413 (or 13362411 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 53449636 is about 7310.9257963681. The cubic root of 53449636 is about 376.6878254053.

The spelling of 53449636 in words is "fifty-three million, four hundred forty-nine thousand, six hundred thirty-six".