55516357 has 8 divisors (see below), whose sum is σ = 60190200. Its totient is φ = 50900160.

The previous prime is 55516343. The next prime is 55516361. The reversal of 55516357 is 75361555.

It can be written as a sum of positive squares in 4 ways, for example, as 5262436 + 50253921 = 2294^2 + 7089^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55516357 - 2¹¹ = 55514309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55516757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12394 + ... + 16267.

It is an arithmetic number, because the mean of its divisors is an integer number (7523775).

Almost surely, 2^55516357 is an apocalyptic number.

It is an amenable number.

55516357 is a deficient number, since it is larger than the sum of its proper divisors (4673843).

55516357 is a wasteful number, since it uses less digits than its factorization.

55516357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28823.

The product of its digits is 78750, while the sum is 37.

The square root of 55516357 is about 7450.9299419603. The cubic root of 55516357 is about 381.4816507799.

The spelling of 55516357 in words is "fifty-five million, five hundred sixteen thousand, three hundred fifty-seven".