51005535 has 32 divisors (see below), whose sum is σ = 93914112. Its totient is φ = 23155200.

The previous prime is 51005533. The next prime is 51005551. The reversal of 51005535 is 53550015.

It is not a de Polignac number, because 51005535 - 2¹ = 51005533 is a prime.

51005535 is a modest number, since divided by 5535 gives 510 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14247 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (2934816).

Almost surely, 2^51005535 is an apocalyptic number.

51005535 is a deficient number, since it is larger than the sum of its proper divisors (42908577).

51005535 is a wasteful number, since it uses less digits than its factorization.

51005535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 51005535 is about 7141.8159455421. The cubic root of 51005535 is about 370.8563922314.

The spelling of 51005535 in words is "fifty-one million, five thousand, five hundred thirty-five".