55051697 has 4 divisors (see below), whose sum is σ = 55068660. Its totient is φ = 55034736.

The previous prime is 55051687. The next prime is 55051727. The reversal of 55051697 is 79615055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16313521 + 38738176 = 4039^2 + 6224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55051697 - 2⁴ = 55051681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55051697.

It is not an unprimeable number, because it can be changed into a prime (55051637) 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, 1922 + ... + 10667.

It is an arithmetic number, because the mean of its divisors is an integer number (13767165).

Almost surely, 2^55051697 is an apocalyptic number.

It is an amenable number.

55051697 is a deficient number, since it is larger than the sum of its proper divisors (16963).

55051697 is a wasteful number, since it uses less digits than its factorization.

55051697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16962.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 55051697 is about 7419.6830794853. The cubic root of 55051697 is about 380.4143610261.

The spelling of 55051697 in words is "fifty-five million, fifty-one thousand, six hundred ninety-seven".