51429500 has 24 divisors (see below), whose sum is σ = 112323120. Its totient is φ = 20571600.

The previous prime is 51429491. The next prime is 51429509. The reversal of 51429500 is 592415.

It is an interprime number because it is at equal distance from previous prime (51429491) and next prime (51429509).

It is a self number, because there is not a number n which added to its sum of digits gives 51429500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50930 + ... + 51929.

It is an arithmetic number, because the mean of its divisors is an integer number (4680130).

Almost surely, 2^51429500 is an apocalyptic number.

51429500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51429500 is an abundant number, since it is smaller than the sum of its proper divisors (60893620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51429500 is a wasteful number, since it uses less digits than its factorization.

51429500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102878 (or 102866 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51429500 is about 7171.4363972638. The cubic root of 51429500 is about 371.8810946910.

The spelling of 51429500 in words is "fifty-one million, four hundred twenty-nine thousand, five hundred".