52274640 has 80 divisors (see below), whose sum is σ = 176792256. Its totient is φ = 12672000.

The previous prime is 52274639. The next prime is 52274641. The reversal of 52274640 is 4647225.

52274640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52274639) and next prime (52274641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52274598 and 52274607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52274641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7261 + ... + 12540.

Almost surely, 2^52274640 is an apocalyptic number.

It is an amenable number.

52274640 is an abundant number, since it is smaller than the sum of its proper divisors (124517616).

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

52274640 is a wasteful number, since it uses less digits than its factorization.

52274640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19828 (or 19822 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 52274640 is about 7230.1203309489. The cubic root of 52274640 is about 373.9070755822.

The spelling of 52274640 in words is "fifty-two million, two hundred seventy-four thousand, six hundred forty".