51223527 has 12 divisors (see below), whose sum is σ = 74062560. Its totient is φ = 34115328.

The previous prime is 51223517. The next prime is 51223531. The reversal of 51223527 is 72532215.

It is not a de Polignac number, because 51223527 - 2⁴ = 51223511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51223527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51223517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9799 + ... + 14087.

It is an arithmetic number, because the mean of its divisors is an integer number (6171880).

Almost surely, 2^51223527 is an apocalyptic number.

51223527 is a deficient number, since it is larger than the sum of its proper divisors (22839033).

51223527 is a wasteful number, since it uses less digits than its factorization.

51223527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622 (or 5619 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 51223527 is about 7157.0613382868. The cubic root of 51223527 is about 371.3839743651.

It can be divided in two parts, 5122 and 3527, that added together give a square (8649 = 93²).

The spelling of 51223527 in words is "fifty-one million, two hundred twenty-three thousand, five hundred twenty-seven".