53623940 has 12 divisors (see below), whose sum is σ = 112610316. Its totient is φ = 21449568.

The previous prime is 53623937. The next prime is 53623943. The reversal of 53623940 is 4932635.

It is an interprime number because it is at equal distance from previous prime (53623937) and next prime (53623943).

It can be written as a sum of positive squares in 2 ways, for example, as 38241856 + 15382084 = 6184^2 + 3922^2 .

It is a super-2 number, since 2×53623940² = 5751053882247200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53623897 and 53623906.

It is not an unprimeable number, because it can be changed into a prime (53623943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340579 + ... + 1340618.

It is an arithmetic number, because the mean of its divisors is an integer number (9384193).

Almost surely, 2^53623940 is an apocalyptic number.

It is an amenable number.

53623940 is an abundant number, since it is smaller than the sum of its proper divisors (58986376).

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

53623940 is a wasteful number, since it uses less digits than its factorization.

53623940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681206 (or 2681204 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 53623940 is about 7322.8368819741. The cubic root of 53623940 is about 377.0968518974.

The spelling of 53623940 in words is "fifty-three million, six hundred twenty-three thousand, nine hundred forty".