51073429 has 4 divisors (see below), whose sum is σ = 55716480. Its totient is φ = 46430380.

The previous prime is 51073427. The next prime is 51073439. The reversal of 51073429 is 92437015.

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 51073429 - 2¹ = 51073427 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51073429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51073427) 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, 2321509 + ... + 2321530.

It is an arithmetic number, because the mean of its divisors is an integer number (13929120).

Almost surely, 2^51073429 is an apocalyptic number.

It is an amenable number.

51073429 is a deficient number, since it is larger than the sum of its proper divisors (4643051).

51073429 is a wasteful number, since it uses less digits than its factorization.

51073429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643050.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51073429 is about 7146.5676376845. The cubic root of 51073429 is about 371.0208695453.

The spelling of 51073429 in words is "fifty-one million, seventy-three thousand, four hundred twenty-nine".