51223356 has 36 divisors (see below), whose sum is σ = 130221000. Its totient is φ = 16976928.

The previous prime is 51223343. The next prime is 51223357. The reversal of 51223356 is 65332215.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51223357) 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, 2470 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (3617250).

Almost surely, 2^51223356 is an apocalyptic number.

It is an amenable number.

51223356 is an abundant number, since it is smaller than the sum of its proper divisors (78997644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51223356 is a wasteful number, since it uses less digits than its factorization.

51223356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8138 (or 8133 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 51223356 is about 7157.0493920330. The cubic root of 51223356 is about 371.3835610998.

The spelling of 51223356 in words is "fifty-one million, two hundred twenty-three thousand, three hundred fifty-six".