51133345 has 8 divisors (see below), whose sum is σ = 61401600. Its totient is φ = 40878960.

The previous prime is 51133343. The next prime is 51133367. The reversal of 51133345 is 54333115.

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

It is not a de Polignac number, because 51133345 - 2¹ = 51133343 is a prime.

It is a super-2 number, since 2×51133345² = 5229237941778050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51133343) 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, 8256 + ... + 13054.

It is an arithmetic number, because the mean of its divisors is an integer number (7675200).

Almost surely, 2^51133345 is an apocalyptic number.

It is an amenable number.

51133345 is a deficient number, since it is larger than the sum of its proper divisors (10268255).

51133345 is a wasteful number, since it uses less digits than its factorization.

51133345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6935.

The product of its digits is 2700, while the sum is 25.

The square root of 51133345 is about 7150.7583513918. The cubic root of 51133345 is about 371.1658986374.

It can be divided in two parts, 511 and 33345, that added together give a square (33856 = 184²).

The spelling of 51133345 in words is "fifty-one million, one hundred thirty-three thousand, three hundred forty-five".