51402941 has 4 divisors (see below), whose sum is σ = 51594300. Its totient is φ = 51211584.

The previous prime is 51402881. The next prime is 51402973. The reversal of 51402941 is 14920415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25290841 + 26112100 = 5029^2 + 5110^2 .

It is a cyclic number.

It is not a de Polignac number, because 51402941 - 2¹⁸ = 51140797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51402941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95276 + ... + 95813.

It is an arithmetic number, because the mean of its divisors is an integer number (12898575).

Almost surely, 2^51402941 is an apocalyptic number.

It is an amenable number.

51402941 is a deficient number, since it is larger than the sum of its proper divisors (191359).

51402941 is a wasteful number, since it uses less digits than its factorization.

51402941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191358.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 51402941 is about 7169.5844370507. The cubic root of 51402941 is about 371.8170685927.

The spelling of 51402941 in words is "fifty-one million, four hundred two thousand, nine hundred forty-one".