55511751 has 8 divisors (see below), whose sum is σ = 74212480. Its totient is φ = 36909432.

The previous prime is 55511741. The next prime is 55511767. The reversal of 55511751 is 15711555.

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

It is not a de Polignac number, because 55511751 - 2⁷ = 55511623 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 (55511741) 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, 23275 + ... + 25548.

It is an arithmetic number, because the mean of its divisors is an integer number (9276560).

Almost surely, 2^55511751 is an apocalyptic number.

55511751 is a deficient number, since it is larger than the sum of its proper divisors (18700729).

55511751 is a wasteful number, since it uses less digits than its factorization.

55511751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49205.

The product of its digits is 4375, while the sum is 30.

The square root of 55511751 is about 7450.6208466141. The cubic root of 55511751 is about 381.4711004174.

The spelling of 55511751 in words is "fifty-five million, five hundred eleven thousand, seven hundred fifty-one".