61552199 has 2 divisors, whose sum is σ = 61552200. Its totient is φ = 61552198.

The previous prime is 61552177. The next prime is 61552241. The reversal of 61552199 is 99125516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61552199 - 2¹² = 61548103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61552109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30776099 + 30776100.

It is an arithmetic number, because the mean of its divisors is an integer number (30776100).

Almost surely, 2^61552199 is an apocalyptic number.

61552199 is a deficient number, since it is larger than the sum of its proper divisors (1).

61552199 is an equidigital number, since it uses as much as digits as its factorization.

61552199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 38.

The square root of 61552199 is about 7845.5209514729. The cubic root of 61552199 is about 394.8339824682.

The spelling of 61552199 in words is "sixty-one million, five hundred fifty-two thousand, one hundred ninety-nine".