51629801 has 4 divisors (see below), whose sum is σ = 51874704. Its totient is φ = 51384900.

The previous prime is 51629797. The next prime is 51629807. The reversal of 51629801 is 10892615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51629801 - 2² = 51629797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51629807) 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, 122135 + ... + 122556.

It is an arithmetic number, because the mean of its divisors is an integer number (12968676).

Almost surely, 2^51629801 is an apocalyptic number.

It is an amenable number.

51629801 is a deficient number, since it is larger than the sum of its proper divisors (244903).

51629801 is a wasteful number, since it uses less digits than its factorization.

51629801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244902.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 51629801 is about 7185.3880201420. The cubic root of 51629801 is about 372.3632541620.

The spelling of 51629801 in words is "fifty-one million, six hundred twenty-nine thousand, eight hundred one".