52491582 has 48 divisors (see below), whose sum is σ = 133621488. Its totient is φ = 14682240.

The previous prime is 52491559. The next prime is 52491583. The reversal of 52491582 is 28519425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52491583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7623 + ... + 12770.

It is an arithmetic number, because the mean of its divisors is an integer number (2783781).

Almost surely, 2^52491582 is an apocalyptic number.

52491582 is an abundant number, since it is smaller than the sum of its proper divisors (81129906).

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

52491582 is a wasteful number, since it uses less digits than its factorization.

52491582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20425 (or 20422 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 52491582 is about 7245.1074526193. The cubic root of 52491582 is about 374.4236051713.

The spelling of 52491582 in words is "fifty-two million, four hundred ninety-one thousand, five hundred eighty-two".