51125223 has 8 divisors (see below), whose sum is σ = 68214528. Its totient is φ = 34059704.

The previous prime is 51125201. The next prime is 51125279. The reversal of 51125223 is 32252115.

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 51125223 - 2¹² = 51121127 is a prime.

It is a super-2 number, since 2×51125223² = 5227576853599458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51125223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125023) 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, 111 + ... + 10112.

It is an arithmetic number, because the mean of its divisors is an integer number (8526816).

Almost surely, 2^51125223 is an apocalyptic number.

51125223 is a deficient number, since it is larger than the sum of its proper divisors (17089305).

51125223 is a wasteful number, since it uses less digits than its factorization.

51125223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11893.

The product of its digits is 600, while the sum is 21.

The square root of 51125223 is about 7150.1904170448. The cubic root of 51125223 is about 371.1462456493.

Adding to 51125223 its reverse (32252115), we get a palindrome (83377338).

The spelling of 51125223 in words is "fifty-one million, one hundred twenty-five thousand, two hundred twenty-three".