47286457 has 2 divisors, whose sum is σ = 47286458. Its totient is φ = 47286456.

The previous prime is 47286427. The next prime is 47286461. The reversal of 47286457 is 75468274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31573161 + 15713296 = 5619^2 + 3964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47286457 is a prime.

It is a super-2 number, since 2×47286457² = 4472018031225698, which contains 22 as substring.

It is equal to p_2847868 and since 47286457 and 2847868 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47286427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23643228 + 23643229.

It is an arithmetic number, because the mean of its divisors is an integer number (23643229).

Almost surely, 2^47286457 is an apocalyptic number.

It is an amenable number.

47286457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47286457 is an equidigital number, since it uses as much as digits as its factorization.

47286457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 43.

The square root of 47286457 is about 6876.5148876448. The cubic root of 47286457 is about 361.6142962058.

The spelling of 47286457 in words is "forty-seven million, two hundred eighty-six thousand, four hundred fifty-seven".