75551 has 8 divisors (see below), whose sum is σ = 88704. Its totient is φ = 63000.

The previous prime is 75541. The next prime is 75553. The reversal of 75551 is 15557.

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

It is not a de Polignac number, because 75551 - 2¹⁰ = 74527 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75553) 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, 176 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2⁷⁵⁵⁵¹ is an apocalyptic number.

75551 is a deficient number, since it is larger than the sum of its proper divisors (13153).

75551 is a wasteful number, since it uses less digits than its factorization.

75551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its digits is 875, while the sum is 23.

The square root of 75551 is about 274.8654216157. The cubic root of 75551 is about 42.2746550307.

It can be divided in two parts, 75 and 551, that added together give a palindrome (626).

The spelling of 75551 in words is "seventy-five thousand, five hundred fifty-one".