61385801 has 2 divisors, whose sum is σ = 61385802. Its totient is φ = 61385800.

The previous prime is 61385767. The next prime is 61385803. The reversal of 61385801 is 10858316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57684025 + 3701776 = 7595^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 61385801 - 2¹⁰ = 61384777 is a prime.

Together with 61385803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61385803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30692900 + 30692901.

It is an arithmetic number, because the mean of its divisors is an integer number (30692901).

Almost surely, 2^61385801 is an apocalyptic number.

It is an amenable number.

61385801 is a deficient number, since it is larger than the sum of its proper divisors (1).

61385801 is an equidigital number, since it uses as much as digits as its factorization.

61385801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 61385801 is about 7834.9091251909. The cubic root of 61385801 is about 394.4778680458.

The spelling of 61385801 in words is "sixty-one million, three hundred eighty-five thousand, eight hundred one".