51804955 has 4 divisors (see below), whose sum is σ = 62165952. Its totient is φ = 41443960.

The previous prime is 51804953. The next prime is 51804959. The reversal of 51804955 is 55940815.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51804955 - 2¹ = 51804953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51804953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5180491 + ... + 5180500.

It is an arithmetic number, because the mean of its divisors is an integer number (15541488).

Almost surely, 2^51804955 is an apocalyptic number.

51804955 is a deficient number, since it is larger than the sum of its proper divisors (10360997).

51804955 is a wasteful number, since it uses less digits than its factorization.

51804955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360996.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 51804955 is about 7197.5659079997. The cubic root of 51804955 is about 372.7838594256.

The spelling of 51804955 in words is "fifty-one million, eight hundred four thousand, nine hundred fifty-five".