53231604 has 24 divisors (see below), whose sum is σ = 127565088. Its totient is φ = 17264160.

The previous prime is 53231599. The next prime is 53231609. The reversal of 53231604 is 40613235.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53231599) and next prime (53231609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53231609) 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, 59502 + ... + 60389.

It is an arithmetic number, because the mean of its divisors is an integer number (5315212).

Almost surely, 2^53231604 is an apocalyptic number.

It is an amenable number.

53231604 is an abundant number, since it is smaller than the sum of its proper divisors (74333484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53231604 is a wasteful number, since it uses less digits than its factorization.

53231604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119935 (or 119933 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 53231604 is about 7295.9991776315. Note that the first 3 decimals coincide. The cubic root of 53231604 is about 376.1749318049.

Adding to 53231604 its reverse (40613235), we get a palindrome (93844839).

It can be divided in two parts, 53231 and 604, that added together give a palindrome (53835).

The spelling of 53231604 in words is "fifty-three million, two hundred thirty-one thousand, six hundred four".