51741240 has 64 divisors (see below), whose sum is σ = 155705760. Its totient is φ = 13754880.

The previous prime is 51741211. The next prime is 51741271. The reversal of 51741240 is 4214715.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51741240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64522 + ... + 65318.

Almost surely, 2^51741240 is an apocalyptic number.

It is an amenable number.

51741240 is an abundant number, since it is smaller than the sum of its proper divisors (103964520).

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

51741240 is a wasteful number, since it uses less digits than its factorization.

51741240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 51741240 is about 7193.1383971115. The cubic root of 51741240 is about 372.6309675656.

Adding to 51741240 its reverse (4214715), we get a palindrome (55955955).

The spelling of 51741240 in words is "fifty-one million, seven hundred forty-one thousand, two hundred forty".