61109051 has 2 divisors, whose sum is σ = 61109052. Its totient is φ = 61109050.

The previous prime is 61109021. The next prime is 61109057. The reversal of 61109051 is 15090116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61109051 - 2¹⁴ = 61092667 is a prime.

It is a super-2 number, since 2×61109051² = 7468632228241202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61109057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30554525 + 30554526.

It is an arithmetic number, because the mean of its divisors is an integer number (30554526).

Almost surely, 2^61109051 is an apocalyptic number.

61109051 is a deficient number, since it is larger than the sum of its proper divisors (1).

61109051 is an equidigital number, since it uses as much as digits as its factorization.

61109051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 61109051 is about 7817.2278334458. The cubic root of 61109051 is about 393.8841573254.

Adding to 61109051 its reverse (15090116), we get a palindrome (76199167).

The spelling of 61109051 in words is "sixty-one million, one hundred nine thousand, fifty-one".