250400047 has 2 divisors, whose sum is σ = 250400048. Its totient is φ = 250400046.

The previous prime is 250399957. The next prime is 250400077. The reversal of 250400047 is 740004052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250400047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250400077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125200023 + 125200024.

It is an arithmetic number, because the mean of its divisors is an integer number (125200024).

Almost surely, 2^250400047 is an apocalyptic number.

250400047 is a deficient number, since it is larger than the sum of its proper divisors (1).

250400047 is an equidigital number, since it uses as much as digits as its factorization.

250400047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 250400047 is about 15824.0338409648. The cubic root of 250400047 is about 630.2963642999.

Adding to 250400047 its reverse (740004052), we get a palindrome (990404099).

The spelling of 250400047 in words is "two hundred fifty million, four hundred thousand, forty-seven".