51111974 has 8 divisors (see below), whose sum is σ = 77384808. Its totient is φ = 25317040.

The previous prime is 51111947. The next prime is 51111989. The reversal of 51111974 is 47911115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51111974² = 5224867772353352, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 119207 + ... + 119634.

It is an arithmetic number, because the mean of its divisors is an integer number (9673101).

Almost surely, 2^51111974 is an apocalyptic number.

51111974 is a deficient number, since it is larger than the sum of its proper divisors (26272834).

51111974 is a wasteful number, since it uses less digits than its factorization.

51111974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238950.

The product of its digits is 1260, while the sum is 29.

The square root of 51111974 is about 7149.2638781905. The cubic root of 51111974 is about 371.1141822753.

The spelling of 51111974 in words is "fifty-one million, one hundred eleven thousand, nine hundred seventy-four".