55237797 has 6 divisors (see below), whose sum is σ = 79787942. Its totient is φ = 36825192.

The previous prime is 55237759. The next prime is 55237799. The reversal of 55237797 is 79773255.

It is a happy number.

55237797 is a `hidden beast` number, since 552 + 3 + 7 + 7 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 8328996 = 6849^2 + 2886^2 .

It is not a de Polignac number, because 55237797 - 2⁶ = 55237733 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 (55237799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3068758 + ... + 3068775.

Almost surely, 2^55237797 is an apocalyptic number.

It is an amenable number.

55237797 is a deficient number, since it is larger than the sum of its proper divisors (24550145).

55237797 is a wasteful number, since it uses less digits than its factorization.

55237797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137539 (or 6137536 counting only the distinct ones).

The product of its digits is 463050, while the sum is 45.

The square root of 55237797 is about 7432.2134657180. The cubic root of 55237797 is about 380.8425372834.

The spelling of 55237797 in words is "fifty-five million, two hundred thirty-seven thousand, seven hundred ninety-seven".