51521222841 has 64 divisors (see below), whose sum is σ = 79152353280. Its totient is φ = 29504471040.

The previous prime is 51521222807. The next prime is 51521222869. The reversal of 51521222841 is 14822212515.

It is not a de Polignac number, because 51521222841 - 2⁶ = 51521222777 is a prime.

It is a super-2 number, since 2×51521222841² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51521222881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60117685 + ... + 60118541.

It is an arithmetic number, because the mean of its divisors is an integer number (1236755520).

Almost surely, 2^51521222841 is an apocalyptic number.

It is an amenable number.

51521222841 is a deficient number, since it is larger than the sum of its proper divisors (27631130439).

51521222841 is a wasteful number, since it uses less digits than its factorization.

51521222841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766.

The product of its digits is 12800, while the sum is 33.

The spelling of 51521222841 in words is "fifty-one billion, five hundred twenty-one million, two hundred twenty-two thousand, eight hundred forty-one".