50694381 has 6 divisors (see below), whose sum is σ = 73225230. Its totient is φ = 33796248.

The previous prime is 50694373. The next prime is 50694389. The reversal of 50694381 is 18349605.

It is an interprime number because it is at equal distance from previous prime (50694373) and next prime (50694389).

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 864900 = 7059^2 + 930^2 .

It is not a de Polignac number, because 50694381 - 2³ = 50694373 is a prime.

It is a super-2 number, since 2×50694381² = 5139840529946322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50694389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2816346 + ... + 2816363.

It is an arithmetic number, because the mean of its divisors is an integer number (12204205).

Almost surely, 2^50694381 is an apocalyptic number.

It is an amenable number.

50694381 is a deficient number, since it is larger than the sum of its proper divisors (22530849).

50694381 is a wasteful number, since it uses less digits than its factorization.

50694381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632715 (or 5632712 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 50694381 is about 7119.9986657302. The cubic root of 50694381 is about 370.1007298183.

It can be divided in two parts, 50 and 694381, that added together give a triangular number (694431 = T₁₁₇₈).

The spelling of 50694381 in words is "fifty million, six hundred ninety-four thousand, three hundred eighty-one".