51241405 has 8 divisors (see below), whose sum is σ = 63610200. Its totient is φ = 39579456.

The previous prime is 51241387. The next prime is 51241409. The reversal of 51241405 is 50414215.

It can be written as a sum of positive squares in 4 ways, for example, as 6859161 + 44382244 = 2619^2 + 6662^2 .

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 51241405 - 2⁷ = 51241277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51241409) 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, 176550 + ... + 176839.

It is an arithmetic number, because the mean of its divisors is an integer number (7951275).

Almost surely, 2^51241405 is an apocalyptic number.

It is an amenable number.

51241405 is a deficient number, since it is larger than the sum of its proper divisors (12368795).

51241405 is a wasteful number, since it uses less digits than its factorization.

51241405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353423.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51241405 is about 7158.3102056281. The cubic root of 51241405 is about 371.4271760655.

The spelling of 51241405 in words is "fifty-one million, two hundred forty-one thousand, four hundred five".