61001599 has 2 divisors, whose sum is σ = 61001600. Its totient is φ = 61001598.

The previous prime is 61001573. The next prime is 61001617. The reversal of 61001599 is 99510016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61001599 - 2¹¹ = 60999551 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61001599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61001519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500799 + 30500800.

It is an arithmetic number, because the mean of its divisors is an integer number (30500800).

Almost surely, 2^61001599 is an apocalyptic number.

61001599 is a deficient number, since it is larger than the sum of its proper divisors (1).

61001599 is an equidigital number, since it uses as much as digits as its factorization.

61001599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 61001599 is about 7810.3520407213. The cubic root of 61001599 is about 393.6531578752.

The spelling of 61001599 in words is "sixty-one million, one thousand, five hundred ninety-nine".