61520183 has 2 divisors, whose sum is σ = 61520184. Its totient is φ = 61520182.

The previous prime is 61520177. The next prime is 61520189. The reversal of 61520183 is 38102516.

It is a balanced prime because it is at equal distance from previous prime (61520177) and next prime (61520189).

It is a cyclic number.

It is not a de Polignac number, because 61520183 - 2¹² = 61516087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61520189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30760091 + 30760092.

It is an arithmetic number, because the mean of its divisors is an integer number (30760092).

Almost surely, 2^61520183 is an apocalyptic number.

61520183 is a deficient number, since it is larger than the sum of its proper divisors (1).

61520183 is an equidigital number, since it uses as much as digits as its factorization.

61520183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 61520183 is about 7843.4802861995. The cubic root of 61520183 is about 394.7655137683.

Adding to 61520183 its reverse (38102516), we get a palindrome (99622699).

The spelling of 61520183 in words is "sixty-one million, five hundred twenty thousand, one hundred eighty-three".