127551 has 16 divisors (see below), whose sum is σ = 187488. Its totient is φ = 76800.

The previous prime is 127549. The next prime is 127579. The reversal of 127551 is 155721.

It is not a de Polignac number, because 127551 - 2¹ = 127549 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127541) by changing a digit.

It is a nontrivial repunit in base 50.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (11718).

2¹²⁷⁵⁵¹ is an apocalyptic number.

127551 is a deficient number, since it is larger than the sum of its proper divisors (59937).

127551 is a wasteful number, since it uses less digits than its factorization.

127551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122.

The product of its digits is 350, while the sum is 21.

The square root of 127551 is about 357.1428285714. The cubic root of 127551 is about 50.3378454015.

It can be divided in two parts, 1275 and 51, that multiplied together give a square (65025 = 255²).

The spelling of 127551 in words is "one hundred twenty-seven thousand, five hundred fifty-one".