51100550 has 12 divisors (see below), whose sum is σ = 95047116. Its totient is φ = 20440200.

The previous prime is 51100547. The next prime is 51100561. The reversal of 51100550 is 5500115.

It is a super-2 number, since 2×51100550² = 5222532420605000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510956 + ... + 511055.

It is an arithmetic number, because the mean of its divisors is an integer number (7920593).

Almost surely, 2^51100550 is an apocalyptic number.

51100550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51100550 is a deficient number, since it is larger than the sum of its proper divisors (43946566).

51100550 is a wasteful number, since it uses less digits than its factorization.

51100550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022023 (or 1022018 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 51100550 is about 7148.4648701662. The cubic root of 51100550 is about 371.0865310618.

Adding to 51100550 its reverse (5500115), we get a palindrome (56600665).

The spelling of 51100550 in words is "fifty-one million, one hundred thousand, five hundred fifty".