51230405 has 8 divisors (see below), whose sum is σ = 62342784. Its totient is φ = 40406800.

The previous prime is 51230393. The next prime is 51230419. The reversal of 51230405 is 50403215.

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

It is not a de Polignac number, because 51230405 - 2¹⁴ = 51214021 is a prime.

It is a Duffinian number.

It is a congruent 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, 71801 + ... + 72510.

It is an arithmetic number, because the mean of its divisors is an integer number (7792848).

Almost surely, 2^51230405 is an apocalyptic number.

It is an amenable number.

51230405 is a deficient number, since it is larger than the sum of its proper divisors (11112379).

51230405 is a wasteful number, since it uses less digits than its factorization.

51230405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144387.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 51230405 is about 7157.5418266329. The cubic root of 51230405 is about 371.4005960544.

The spelling of 51230405 in words is "fifty-one million, two hundred thirty thousand, four hundred five".