51770427 has 8 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 34432680.

The previous prime is 51770419. The next prime is 51770441. The reversal of 51770427 is 72407715.

It is a happy number.

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

It is not a de Polignac number, because 51770427 - 2³ = 51770419 is a prime.

It is a super-2 number, since 2×51770427² = 5360354223524658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51770227) 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, 18727 + ... + 21312.

It is an arithmetic number, because the mean of its divisors is an integer number (8648640).

Almost surely, 2^51770427 is an apocalyptic number.

51770427 is a deficient number, since it is larger than the sum of its proper divisors (17418693).

51770427 is a wasteful number, since it uses less digits than its factorization.

51770427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40473.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 51770427 is about 7195.1669195370. The cubic root of 51770427 is about 372.7010208774.

The spelling of 51770427 in words is "fifty-one million, seven hundred seventy thousand, four hundred twenty-seven".