61040051 has 2 divisors, whose sum is σ = 61040052. Its totient is φ = 61040050.

The previous prime is 61040039. The next prime is 61040059. The reversal of 61040051 is 15004016.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61040051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61040059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30520025 + 30520026.

It is an arithmetic number, because the mean of its divisors is an integer number (30520026).

Almost surely, 2^61040051 is an apocalyptic number.

61040051 is a deficient number, since it is larger than the sum of its proper divisors (1).

61040051 is an equidigital number, since it uses as much as digits as its factorization.

61040051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 61040051 is about 7812.8132577197. The cubic root of 61040051 is about 393.7358528217.

Adding to 61040051 its reverse (15004016), we get a palindrome (76044067).

The spelling of 61040051 in words is "sixty-one million, forty thousand, fifty-one".