55750197 has 4 divisors (see below), whose sum is σ = 74333600. Its totient is φ = 37166796.

The previous prime is 55750169. The next prime is 55750207. The reversal of 55750197 is 79105755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55750197 - 2¹⁴ = 55733813 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 (55750127) 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, 9291697 + ... + 9291702.

It is an arithmetic number, because the mean of its divisors is an integer number (18583400).

Almost surely, 2^55750197 is an apocalyptic number.

It is an amenable number.

55750197 is a deficient number, since it is larger than the sum of its proper divisors (18583403).

55750197 is a wasteful number, since it uses less digits than its factorization.

55750197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18583402.

The product of its (nonzero) digits is 55125, while the sum is 39.

The square root of 55750197 is about 7466.6054536181. The cubic root of 55750197 is about 382.0165124483.

The spelling of 55750197 in words is "fifty-five million, seven hundred fifty thousand, one hundred ninety-seven".