61541803 has 2 divisors, whose sum is σ = 61541804. Its totient is φ = 61541802.

The previous prime is 61541801. The next prime is 61541807. The reversal of 61541803 is 30814516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61541803 - 2¹ = 61541801 is a prime.

Together with 61541801, it forms a pair of twin primes.

It is equal to p_3648106 and since 61541803 and 3648106 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 (61541801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30770901 + 30770902.

It is an arithmetic number, because the mean of its divisors is an integer number (30770902).

Almost surely, 2^61541803 is an apocalyptic number.

61541803 is a deficient number, since it is larger than the sum of its proper divisors (1).

61541803 is an equidigital number, since it uses as much as digits as its factorization.

61541803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 61541803 is about 7844.8583798562. The cubic root of 61541803 is about 394.8117524193.

The spelling of 61541803 in words is "sixty-one million, five hundred forty-one thousand, eight hundred three".