51429436 has 12 divisors (see below), whose sum is σ = 90606600. Its totient is φ = 25541840.

The previous prime is 51429431. The next prime is 51429439. The reversal of 51429436 is 63492415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429431) 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, 42550 + ... + 43741.

It is an arithmetic number, because the mean of its divisors is an integer number (7550550).

Almost surely, 2^51429436 is an apocalyptic number.

It is an amenable number.

51429436 is a deficient number, since it is larger than the sum of its proper divisors (39177164).

51429436 is a wasteful number, since it uses less digits than its factorization.

51429436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86444 (or 86442 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 51429436 is about 7171.4319351159. The cubic root of 51429436 is about 371.8809404319.

The spelling of 51429436 in words is "fifty-one million, four hundred twenty-nine thousand, four hundred thirty-six".