55750215 has 8 divisors (see below), whose sum is σ = 89200368. Its totient is φ = 29733440.

The previous prime is 55750213. The next prime is 55750291. The reversal of 55750215 is 51205755.

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

It is not a de Polignac number, because 55750215 - 2¹ = 55750213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55750213) 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, 1858326 + ... + 1858355.

It is an arithmetic number, because the mean of its divisors is an integer number (11150046).

Almost surely, 2^55750215 is an apocalyptic number.

55750215 is a deficient number, since it is larger than the sum of its proper divisors (33450153).

55750215 is a wasteful number, since it uses less digits than its factorization.

55750215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716689.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 55750215 is about 7466.6066589851. The cubic root of 55750215 is about 382.0165535621.

The spelling of 55750215 in words is "fifty-five million, seven hundred fifty thousand, two hundred fifteen".