51855629 has 8 divisors (see below), whose sum is σ = 59309568. Its totient is φ = 44413200.

The previous prime is 51855613. The next prime is 51855641. The reversal of 51855629 is 92655815.

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 51855629 - 2⁴ = 51855613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51855929) 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, 11759 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (7413696).

Almost surely, 2^51855629 is an apocalyptic number.

It is an amenable number.

51855629 is a deficient number, since it is larger than the sum of its proper divisors (7453939).

51855629 is a wasteful number, since it uses less digits than its factorization.

51855629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755.

The product of its digits is 108000, while the sum is 41.

The square root of 51855629 is about 7201.0852654305. The cubic root of 51855629 is about 372.9053683513.

The spelling of 51855629 in words is "fifty-one million, eight hundred fifty-five thousand, six hundred twenty-nine".