51100533 has 24 divisors (see below), whose sum is σ = 82049760. Its totient is φ = 30382560.

The previous prime is 51100531. The next prime is 51100547. The reversal of 51100533 is 33500115.

It is a happy number.

It is not a de Polignac number, because 51100533 - 2¹ = 51100531 is a prime.

It is a super-2 number, since 2×51100533² = 5222528945768178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100531) 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, 378 + ... + 10116.

It is an arithmetic number, because the mean of its divisors is an integer number (3418740).

Almost surely, 2^51100533 is an apocalyptic number.

51100533 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51100533 is a deficient number, since it is larger than the sum of its proper divisors (30949227).

51100533 is a wasteful number, since it uses less digits than its factorization.

51100533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809 (or 9806 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 51100533 is about 7148.4636810996. The cubic root of 51100533 is about 371.0864899111.

Adding to 51100533 its reverse (33500115), we get a palindrome (84600648).

The spelling of 51100533 in words is "fifty-one million, one hundred thousand, five hundred thirty-three".