51121024 has 32 divisors (see below), whose sum is σ = 103256640. Its totient is φ = 25205760.

The previous prime is 51121009. The next prime is 51121033. The reversal of 51121024 is 42012115.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×51121024² = 5226718189617152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 51120989 and 51121007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6609 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (3226770).

Almost surely, 2^51121024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51121024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51628320).

51121024 is an abundant number, since it is smaller than the sum of its proper divisors (52135616).

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

51121024 is an equidigital number, since it uses as much as digits as its factorization.

51121024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 51121024 is about 7149.8967824718. The cubic root of 51121024 is about 371.1360844174.

Adding to 51121024 its reverse (42012115), we get a palindrome (93133139).

The spelling of 51121024 in words is "fifty-one million, one hundred twenty-one thousand, twenty-four".