2391552 has 80 divisors (see below), whose sum is σ = 7120080. Its totient is φ = 792576.

The previous prime is 2391547. The next prime is 2391559. The reversal of 2391552 is 2551932.

2391552 is a `hidden beast` number, since 23 + 91 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13738 + ... + 13910.

It is an arithmetic number, because the mean of its divisors is an integer number (89001).

2^2391552 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 2391552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3560040).

2391552 is an abundant number, since it is smaller than the sum of its proper divisors (4728528).

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

2391552 is an equidigital number, since it uses as much as digits as its factorization.

2391552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 178 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 2391552 is about 1546.4643545844. The cubic root of 2391552 is about 133.7293117330.

The spelling of 2391552 in words is "two million, three hundred ninety-one thousand, five hundred fifty-two".