55255497 has 12 divisors (see below), whose sum is σ = 80981040. Its totient is φ = 33487960.

The previous prime is 55255489. The next prime is 55255517. The reversal of 55255497 is 79455255.

It is not a de Polignac number, because 55255497 - 2³ = 55255489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55250497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75747 + ... + 76472.

It is an arithmetic number, because the mean of its divisors is an integer number (6748420).

Almost surely, 2^55255497 is an apocalyptic number.

It is an amenable number.

55255497 is a deficient number, since it is larger than the sum of its proper divisors (25725543).

55255497 is a wasteful number, since it uses less digits than its factorization.

55255497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152244 (or 152233 counting only the distinct ones).

The product of its digits is 315000, while the sum is 42.

The square root of 55255497 is about 7433.4041326972. The cubic root of 55255497 is about 380.8832110817.

It can be divided in two parts, 55 and 255497, that added together give a palindrome (255552).

The spelling of 55255497 in words is "fifty-five million, two hundred fifty-five thousand, four hundred ninety-seven".