47945537 has 2 divisors, whose sum is σ = 47945538. Its totient is φ = 47945536.

The previous prime is 47945507. The next prime is 47945539. The reversal of 47945537 is 73554974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39325441 + 8620096 = 6271^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 47945537 - 2¹² = 47941441 is a prime.

Together with 47945539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47945539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23972768 + 23972769.

It is an arithmetic number, because the mean of its divisors is an integer number (23972769).

Almost surely, 2^47945537 is an apocalyptic number.

It is an amenable number.

47945537 is a deficient number, since it is larger than the sum of its proper divisors (1).

47945537 is an equidigital number, since it uses as much as digits as its factorization.

47945537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 44.

The square root of 47945537 is about 6924.2715862392. The cubic root of 47945537 is about 363.2866139930.

The spelling of 47945537 in words is "forty-seven million, nine hundred forty-five thousand, five hundred thirty-seven".