52787490 has 64 divisors (see below), whose sum is σ = 145725696. Its totient is φ = 11987712.

The previous prime is 52787489. The next prime is 52787503. The reversal of 52787490 is 9478725.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35604 + ... + 37056.

It is an arithmetic number, because the mean of its divisors is an integer number (2276964).

Almost surely, 2^52787490 is an apocalyptic number.

It is a pronic number, being equal to 7265×7266.

It is a practical number, because each smaller number is the sum of distinct divisors of 52787490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72862848).

52787490 is an abundant number, since it is smaller than the sum of its proper divisors (92938206).

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

52787490 is a wasteful number, since it uses less digits than its factorization.

52787490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 52787490 is about 7265.4999827954. The cubic root of 52787490 is about 375.1258599755.

The spelling of 52787490 in words is "fifty-two million, seven hundred eighty-seven thousand, four hundred ninety".