51001345 has 8 divisors (see below), whose sum is σ = 62504064. Its totient is φ = 39932784.

The previous prime is 51001303. The next prime is 51001367. The reversal of 51001345 is 54310015.

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

It is a cyclic number.

It is not a de Polignac number, because 51001345 - 2¹⁹ = 50477057 is a prime.

It is a super-2 number, since 2×51001345² = 5202274383618050, which contains 22 as substring.

It is a Duffinian 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, 108279 + ... + 108748.

It is an arithmetic number, because the mean of its divisors is an integer number (7813008).

Almost surely, 2^51001345 is an apocalyptic number.

It is an amenable number.

51001345 is a deficient number, since it is larger than the sum of its proper divisors (11502719).

51001345 is a wasteful number, since it uses less digits than its factorization.

51001345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217079.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51001345 is about 7141.5225967576. The cubic root of 51001345 is about 370.8462369228.

The spelling of 51001345 in words is "fifty-one million, one thousand, three hundred forty-five".