51929401 has 4 divisors (see below), whose sum is σ = 53720100. Its totient is φ = 50138704.

The previous prime is 51929393. The next prime is 51929417. The reversal of 51929401 is 10492915.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29376400 + 22553001 = 5420^2 + 4749^2 .

It is a cyclic number.

It is not a de Polignac number, because 51929401 - 2³ = 51929393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51929461) 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 3 ways as a sum of consecutive naturals, for example, 895306 + ... + 895363.

It is an arithmetic number, because the mean of its divisors is an integer number (13430025).

Almost surely, 2^51929401 is an apocalyptic number.

It is an amenable number.

51929401 is a deficient number, since it is larger than the sum of its proper divisors (1790699).

51929401 is a wasteful number, since it uses less digits than its factorization.

51929401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790698.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 51929401 is about 7206.2057283983. The cubic root of 51929401 is about 373.0821215155.

The spelling of 51929401 in words is "fifty-one million, nine hundred twenty-nine thousand, four hundred one".