51224951 has 2 divisors, whose sum is σ = 51224952. Its totient is φ = 51224950.

The previous prime is 51224947. The next prime is 51224963. The reversal of 51224951 is 15942215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51224951 - 2² = 51224947 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51224941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25612475 + 25612476.

It is an arithmetic number, because the mean of its divisors is an integer number (25612476).

Almost surely, 2^51224951 is an apocalyptic number.

51224951 is a deficient number, since it is larger than the sum of its proper divisors (1).

51224951 is an equidigital number, since it uses as much as digits as its factorization.

51224951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 51224951 is about 7157.1608197665. The cubic root of 51224951 is about 371.3874157908.

The spelling of 51224951 in words is "fifty-one million, two hundred twenty-four thousand, nine hundred fifty-one".