51493833 has 32 divisors (see below), whose sum is σ = 82684800. Its totient is φ = 31546368.

The previous prime is 51493823. The next prime is 51493847. The reversal of 51493833 is 33839415.

It is not a de Polignac number, because 51493833 - 2¹³ = 51485641 is a prime.

It is a super-2 number, since 2×51493833² = 5303229674063778, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51493823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18433 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (2583900).

Almost surely, 2^51493833 is an apocalyptic number.

It is an amenable number.

51493833 is a deficient number, since it is larger than the sum of its proper divisors (31190967).

51493833 is a wasteful number, since it uses less digits than its factorization.

51493833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2672 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51493833 is about 7175.9203590898. The cubic root of 51493833 is about 372.0360917116.

It can be divided in two parts, 51493 and 833, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51493833 in words is "fifty-one million, four hundred ninety-three thousand, eight hundred thirty-three".