70551 has 20 divisors (see below), whose sum is σ = 115192. Its totient is φ = 42768.

The previous prime is 70549. The next prime is 70571. The reversal of 70551 is 15507.

It is a happy number.

It is not a de Polignac number, because 70551 - 2¹ = 70549 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1020 + ... + 1086.

2⁷⁰⁵⁵¹ is an apocalyptic number.

70551 is a deficient number, since it is larger than the sum of its proper divisors (44641).

70551 is a wasteful number, since it uses less digits than its factorization.

70551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 18.

The square root of 70551 is about 265.6143821407. The cubic root of 70551 is about 41.3207051838.

It can be divided in two parts, 7055 and 1, that added together give a square (7056 = 84²).

The spelling of 70551 in words is "seventy thousand, five hundred fifty-one".