51274551 has 8 divisors (see below), whose sum is σ = 68479344. Its totient is φ = 34126400.

The previous prime is 51274547. The next prime is 51274571. The reversal of 51274551 is 15547215.

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

It is a cyclic number.

It is not a de Polignac number, because 51274551 - 2² = 51274547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274501) 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, 12000 + ... + 15701.

It is an arithmetic number, because the mean of its divisors is an integer number (8559918).

Almost surely, 2^51274551 is an apocalyptic number.

51274551 is a deficient number, since it is larger than the sum of its proper divisors (17204793).

51274551 is a wasteful number, since it uses less digits than its factorization.

51274551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28321.

The product of its digits is 7000, while the sum is 30.

The square root of 51274551 is about 7160.6250425504. The cubic root of 51274551 is about 371.5072458942.

The spelling of 51274551 in words is "fifty-one million, two hundred seventy-four thousand, five hundred fifty-one".