51103624 has 96 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 20592000.

The previous prime is 51103621. The next prime is 51103709. The reversal of 51103624 is 42630115.

It is a super-2 number, since 2×51103624² = 5223160771866752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 51103595 and 51103604.

It is not an unprimeable number, because it can be changed into a prime (51103621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390039 + ... + 390169.

It is an arithmetic number, because the mean of its divisors is an integer number (1228920).

Almost surely, 2^51103624 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 51103624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58988160).

51103624 is an abundant number, since it is smaller than the sum of its proper divisors (66872696).

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

51103624 is a wasteful number, since it uses less digits than its factorization.

51103624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51103624 is about 7148.6798781313. The cubic root of 51103624 is about 371.0939719284.

Adding to 51103624 its reverse (42630115), we get a palindrome (93733739).

The spelling of 51103624 in words is "fifty-one million, one hundred three thousand, six hundred twenty-four".