51552535 has 16 divisors (see below), whose sum is σ = 64108800. Its totient is φ = 39755520.

The previous prime is 51552533. The next prime is 51552559. The reversal of 51552535 is 53525515.

It is a happy number.

It is not a de Polignac number, because 51552535 - 2¹ = 51552533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 51552497 and 51552506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51552533) 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 15 ways as a sum of consecutive naturals, for example, 53619 + ... + 54571.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^51552535 is an apocalyptic number.

51552535 is a deficient number, since it is larger than the sum of its proper divisors (12556265).

51552535 is a wasteful number, since it uses less digits than its factorization.

51552535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its digits is 18750, while the sum is 31.

The square root of 51552535 is about 7180.0094011081. The cubic root of 51552535 is about 372.1774094050.

The spelling of 51552535 in words is "fifty-one million, five hundred fifty-two thousand, five hundred thirty-five".