51155534 has 16 divisors (see below), whose sum is σ = 79002000. Its totient is φ = 24825024.

The previous prime is 51155527. The next prime is 51155539. The reversal of 51155534 is 43555115.

It is a junction number, because it is equal to n+sod(n) for n = 51155497 and 51155506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48242 + ... + 49290.

It is an arithmetic number, because the mean of its divisors is an integer number (4937625).

Almost surely, 2^51155534 is an apocalyptic number.

51155534 is a deficient number, since it is larger than the sum of its proper divisors (27846466).

51155534 is a wasteful number, since it uses less digits than its factorization.

51155534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its digits is 7500, while the sum is 29.

The square root of 51155534 is about 7152.3096968742. The cubic root of 51155534 is about 371.2195792583.

The spelling of 51155534 in words is "fifty-one million, one hundred fifty-five thousand, five hundred thirty-four".