53486140 has 48 divisors (see below), whose sum is σ = 121151520. Its totient is φ = 19768320.

The previous prime is 53486123. The next prime is 53486143. The reversal of 53486140 is 4168435.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53486143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13864 + ... + 17296.

It is an arithmetic number, because the mean of its divisors is an integer number (2523990).

Almost surely, 2^53486140 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 53486140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60575760).

53486140 is an abundant number, since it is smaller than the sum of its proper divisors (67665380).

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

53486140 is a wasteful number, since it uses less digits than its factorization.

53486140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 53486140 is about 7313.4219076982. The cubic root of 53486140 is about 376.7735602155.

The spelling of 53486140 in words is "fifty-three million, four hundred eighty-six thousand, one hundred forty".