55651730 has 8 divisors (see below), whose sum is σ = 100173132. Its totient is φ = 22260688.

The previous prime is 55651723. The next prime is 55651733. The reversal of 55651730 is 3715655.

It can be written as a sum of positive squares in 2 ways, for example, as 55160329 + 491401 = 7427^2 + 701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55651733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782577 + ... + 2782596.

Almost surely, 2^55651730 is an apocalyptic number.

55651730 is a deficient number, since it is larger than the sum of its proper divisors (44521402).

55651730 is a wasteful number, since it uses less digits than its factorization.

55651730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565180.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 55651730 is about 7460.0087131316. The cubic root of 55651730 is about 381.7914717624.

The spelling of 55651730 in words is "fifty-five million, six hundred fifty-one thousand, seven hundred thirty".