51001553237 has 2 divisors, whose sum is σ = 51001553238. Its totient is φ = 51001553236.

The previous prime is 51001553203. The next prime is 51001553269. The reversal of 51001553237 is 73235510015.

It is an a-pointer prime, because the next prime (51001553269) can be obtained adding 51001553237 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31737778801 + 19263774436 = 178151^2 + 138794^2 .

It is a cyclic number.

It is not a de Polignac number, because 51001553237 - 2¹⁰ = 51001552213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51001555237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500776618 + 25500776619.

It is an arithmetic number, because the mean of its divisors is an integer number (25500776619).

Almost surely, 2^51001553237 is an apocalyptic number.

It is an amenable number.

51001553237 is a deficient number, since it is larger than the sum of its proper divisors (1).

51001553237 is an equidigital number, since it uses as much as digits as its factorization.

51001553237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 32.

The spelling of 51001553237 in words is "fifty-one billion, one million, five hundred fifty-three thousand, two hundred thirty-seven".