53151540 has 96 divisors (see below), whose sum is σ = 162400896. Its totient is φ = 12910080.

The previous prime is 53151517. The next prime is 53151541. The reversal of 53151540 is 4515135.

It is a self number, because there is not a number n which added to its sum of digits gives 53151540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53151541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64330 + ... + 65150.

It is an arithmetic number, because the mean of its divisors is an integer number (1691676).

Almost surely, 2^53151540 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 53151540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81200448).

53151540 is an abundant number, since it is smaller than the sum of its proper divisors (109249356).

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

53151540 is a wasteful number, since it uses less digits than its factorization.

53151540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 53151540 is about 7290.5102702074. The cubic root of 53151540 is about 375.9862394994.

Adding to 53151540 its reverse (4515135), we get a palindrome (57666675).

The spelling of 53151540 in words is "fifty-three million, one hundred fifty-one thousand, five hundred forty".