51422757 has 8 divisors (see below), whose sum is σ = 68601984. Its totient is φ = 34262688.

The previous prime is 51422753. The next prime is 51422783. The reversal of 51422757 is 75722415.

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

It is not a de Polignac number, because 51422757 - 2² = 51422753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51422753) 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, 3553 + ... + 10745.

It is an arithmetic number, because the mean of its divisors is an integer number (8575248).

Almost surely, 2^51422757 is an apocalyptic number.

It is an amenable number.

51422757 is a deficient number, since it is larger than the sum of its proper divisors (17179227).

51422757 is a wasteful number, since it uses less digits than its factorization.

51422757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579.

The product of its digits is 19600, while the sum is 33.

The square root of 51422757 is about 7170.9662528839. The cubic root of 51422757 is about 371.8648413486.

The spelling of 51422757 in words is "fifty-one million, four hundred twenty-two thousand, seven hundred fifty-seven".