51505099 has 8 divisors (see below), whose sum is σ = 52817072. Its totient is φ = 50198400.

The previous prime is 51505093. The next prime is 51505109. The reversal of 51505099 is 99050515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51505099 - 2⁹ = 51504587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51505093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24847 + ... + 26839.

It is an arithmetic number, because the mean of its divisors is an integer number (6602134).

Almost surely, 2^51505099 is an apocalyptic number.

51505099 is a deficient number, since it is larger than the sum of its proper divisors (1311973).

51505099 is a wasteful number, since it uses less digits than its factorization.

51505099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 51505099 is about 7176.7053025744. The cubic root of 51505099 is about 372.0632215168.

The spelling of 51505099 in words is "fifty-one million, five hundred five thousand, ninety-nine".