52666740 has 96 divisors (see below), whose sum is σ = 187272960. Its totient is φ = 12037248.

The previous prime is 52666717. The next prime is 52666741. The reversal of 52666740 is 4766625.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52666695 and 52666704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52666741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3187 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (1950760).

Almost surely, 2^52666740 is an apocalyptic number.

It is an amenable number.

52666740 is an abundant number, since it is smaller than the sum of its proper divisors (134606220).

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

52666740 is a wasteful number, since it uses less digits than its factorization.

52666740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958 (or 13950 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 52666740 is about 7257.1854048247. The cubic root of 52666740 is about 374.8396114111.

The spelling of 52666740 in words is "fifty-two million, six hundred sixty-six thousand, seven hundred forty".