55751040 has 96 divisors (see below), whose sum is σ = 192535200. Its totient is φ = 14865408.

The previous prime is 55751023. The next prime is 55751063. The reversal of 55751040 is 4015755.

55751040 is a `hidden beast` number, since 557 + 5 + 104 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×55751040² = 6216356922163200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55750995 and 55751013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (2005575).

Almost surely, 2^55751040 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 55751040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96267600).

55751040 is an abundant number, since it is smaller than the sum of its proper divisors (136784160).

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

55751040 is a wasteful number, since it uses less digits than its factorization.

55751040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704 (or 9689 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55751040 is about 7466.6619047604. The cubic root of 55751040 is about 382.0184379321.

Adding to 55751040 its reverse (4015755), we get a palindrome (59766795).

The spelling of 55751040 in words is "fifty-five million, seven hundred fifty-one thousand, forty".