52477440 has 80 divisors (see below), whose sum is σ = 167788368. Its totient is φ = 13991936.

The previous prime is 52477429. The next prime is 52477463. The reversal of 52477440 is 4477425.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4264 + ... + 11096.

Almost surely, 2^52477440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52477440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83894184).

52477440 is an abundant number, since it is smaller than the sum of its proper divisors (115310928).

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

52477440 is an equidigital number, since it uses as much as digits as its factorization.

52477440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6859 (or 6843 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 52477440 is about 7244.1314179134. The cubic root of 52477440 is about 374.3899770858.

The spelling of 52477440 in words is "fifty-two million, four hundred seventy-seven thousand, four hundred forty".