53081650 has 48 divisors (see below), whose sum is σ = 105401736. Its totient is φ = 19819520.

The previous prime is 53081591. The next prime is 53081671. The reversal of 53081650 is 5618035.

It can be written as a sum of positive squares in 12 ways, for example, as 9903609 + 43178041 = 3147^2 + 6571^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167292 + ... + 167608.

Almost surely, 2^53081650 is an apocalyptic number.

53081650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53081650 is a deficient number, since it is larger than the sum of its proper divisors (52320086).

53081650 is a wasteful number, since it uses less digits than its factorization.

53081650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 53081650 is about 7285.7154761904. The cubic root of 53081650 is about 375.8213699938.

Adding to 53081650 its reverse (5618035), we get a palindrome (58699685).

The spelling of 53081650 in words is "fifty-three million, eighty-one thousand, six hundred fifty".