55097951 has 4 divisors (see below), whose sum is σ = 55225632. Its totient is φ = 54970272.

The previous prime is 55097947. The next prime is 55097957. The reversal of 55097951 is 15979055.

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

It is a cyclic number.

It is not a de Polignac number, because 55097951 - 2² = 55097947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55097899 and 55097908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55097957) 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, 63191 + ... + 64056.

It is an arithmetic number, because the mean of its divisors is an integer number (13806408).

Almost surely, 2^55097951 is an apocalyptic number.

55097951 is a deficient number, since it is larger than the sum of its proper divisors (127681).

55097951 is a wasteful number, since it uses less digits than its factorization.

55097951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127680.

The product of its (nonzero) digits is 70875, while the sum is 41.

The square root of 55097951 is about 7422.7994045373. The cubic root of 55097951 is about 380.5208715800.

The spelling of 55097951 in words is "fifty-five million, ninety-seven thousand, nine hundred fifty-one".