61462409 has 2 divisors, whose sum is σ = 61462410. Its totient is φ = 61462408.

The previous prime is 61462391. The next prime is 61462411. The reversal of 61462409 is 90426416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31047184 + 30415225 = 5572^2 + 5515^2 .

It is a cyclic number.

It is not a de Polignac number, because 61462409 - 2⁸ = 61462153 is a prime.

It is a Sophie Germain prime.

Together with 61462411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61462459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30731204 + 30731205.

It is an arithmetic number, because the mean of its divisors is an integer number (30731205).

Almost surely, 2^61462409 is an apocalyptic number.

It is an amenable number.

61462409 is a deficient number, since it is larger than the sum of its proper divisors (1).

61462409 is an equidigital number, since it uses as much as digits as its factorization.

61462409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 61462409 is about 7839.7964897056. The cubic root of 61462409 is about 394.6418994526.

The spelling of 61462409 in words is "sixty-one million, four hundred sixty-two thousand, four hundred nine".