61002811 has 2 divisors, whose sum is σ = 61002812. Its totient is φ = 61002810.

The previous prime is 61002803. The next prime is 61002827. The reversal of 61002811 is 11820016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61002811 - 2³ = 61002803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61002211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30501405 + 30501406.

It is an arithmetic number, because the mean of its divisors is an integer number (30501406).

Almost surely, 2^61002811 is an apocalyptic number.

61002811 is a deficient number, since it is larger than the sum of its proper divisors (1).

61002811 is an equidigital number, since it uses as much as digits as its factorization.

61002811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 61002811 is about 7810.4296296683. The cubic root of 61002811 is about 393.6557649351.

Adding to 61002811 its reverse (11820016), we get a palindrome (72822827).

It can be divided in two parts, 6100 and 2811, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 61002811 in words is "sixty-one million, two thousand, eight hundred eleven".