61362109 has 2 divisors, whose sum is σ = 61362110. Its totient is φ = 61362108.

The previous prime is 61362107. The next prime is 61362139. The reversal of 61362109 is 90126316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49042009 + 12320100 = 7003^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 61362109 - 2¹ = 61362107 is a prime.

Together with 61362107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61362101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30681054 + 30681055.

It is an arithmetic number, because the mean of its divisors is an integer number (30681055).

Almost surely, 2^61362109 is an apocalyptic number.

It is an amenable number.

61362109 is a deficient number, since it is larger than the sum of its proper divisors (1).

61362109 is an equidigital number, since it uses as much as digits as its factorization.

61362109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 61362109 is about 7833.3970281098. The cubic root of 61362109 is about 394.4271116161.

The spelling of 61362109 in words is "sixty-one million, three hundred sixty-two thousand, one hundred nine".