55123751 has 8 divisors (see below), whose sum is σ = 57748800. Its totient is φ = 52547040.

The previous prime is 55123727. The next prime is 55123771. The reversal of 55123751 is 15732155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55123751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9740 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (7218600).

Almost surely, 2^55123751 is an apocalyptic number.

55123751 is a deficient number, since it is larger than the sum of its proper divisors (2625049).

55123751 is a wasteful number, since it uses less digits than its factorization.

55123751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24169.

The product of its digits is 5250, while the sum is 29.

The square root of 55123751 is about 7424.5370899471. The cubic root of 55123751 is about 380.5802561630.

The spelling of 55123751 in words is "fifty-five million, one hundred twenty-three thousand, seven hundred fifty-one".