51723854 has 32 divisors (see below), whose sum is σ = 98083776. Its totient is φ = 19906560.

The previous prime is 51723853. The next prime is 51723887. The reversal of 51723854 is 45832715.

It is a happy number.

It is a super-2 number, since 2×51723854² = 5350714145226632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51723851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2894 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (3065118).

Almost surely, 2^51723854 is an apocalyptic number.

51723854 is a deficient number, since it is larger than the sum of its proper divisors (46359922).

51723854 is a wasteful number, since it uses less digits than its factorization.

51723854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740.

The product of its digits is 33600, while the sum is 35.

The square root of 51723854 is about 7191.9297827496. The cubic root of 51723854 is about 372.5892259570.

The spelling of 51723854 in words is "fifty-one million, seven hundred twenty-three thousand, eight hundred fifty-four".