51203870 has 16 divisors (see below), whose sum is σ = 92721888. Its totient is φ = 20358240.

The previous prime is 51203863. The next prime is 51203897. The reversal of 51203870 is 7830215.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13661 + ... + 17000.

It is an arithmetic number, because the mean of its divisors is an integer number (5795118).

Almost surely, 2^51203870 is an apocalyptic number.

51203870 is a deficient number, since it is larger than the sum of its proper divisors (41518018).

51203870 is a wasteful number, since it uses less digits than its factorization.

51203870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30835.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51203870 is about 7155.6879473605. The cubic root of 51203870 is about 371.3364621558.

The spelling of 51203870 in words is "fifty-one million, two hundred three thousand, eight hundred seventy".