48540581 has 2 divisors, whose sum is σ = 48540582. Its totient is φ = 48540580.

The previous prime is 48540571. The next prime is 48540589. The reversal of 48540581 is 18504584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29757025 + 18783556 = 5455^2 + 4334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48540581 is a prime.

It is a super-2 number, since 2×48540581² = 4712376007635122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48540589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24270290 + 24270291.

It is an arithmetic number, because the mean of its divisors is an integer number (24270291).

Almost surely, 2^48540581 is an apocalyptic number.

It is an amenable number.

48540581 is a deficient number, since it is larger than the sum of its proper divisors (1).

48540581 is an equidigital number, since it uses as much as digits as its factorization.

48540581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 48540581 is about 6967.1070753936. The cubic root of 48540581 is about 364.7833354776.

The spelling of 48540581 in words is "forty-eight million, five hundred forty thousand, five hundred eighty-one".