415601591 has 2 divisors, whose sum is σ = 415601592. Its totient is φ = 415601590.

The previous prime is 415601551. The next prime is 415601617. The reversal of 415601591 is 195106514.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-415601591 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415601551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207800795 + 207800796.

It is an arithmetic number, because the mean of its divisors is an integer number (207800796).

Almost surely, 2^415601591 is an apocalyptic number.

415601591 is a deficient number, since it is larger than the sum of its proper divisors (1).

415601591 is an equidigital number, since it uses as much as digits as its factorization.

415601591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 415601591 is about 20386.3089106390. The cubic root of 415601591 is about 746.2638433798.

The spelling of 415601591 in words is "four hundred fifteen million, six hundred one thousand, five hundred ninety-one".