61353961 has 2 divisors, whose sum is σ = 61353962. Its totient is φ = 61353960.

The previous prime is 61353899. The next prime is 61353967. The reversal of 61353961 is 16935316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 810000 = 7781^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 61353961 - 2⁹ = 61353449 is a prime.

It is equal to p_3637627 and since 61353961 and 3637627 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61353967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30676980 + 30676981.

It is an arithmetic number, because the mean of its divisors is an integer number (30676981).

Almost surely, 2^61353961 is an apocalyptic number.

It is an amenable number.

61353961 is a deficient number, since it is larger than the sum of its proper divisors (1).

61353961 is an equidigital number, since it uses as much as digits as its factorization.

61353961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 34.

The square root of 61353961 is about 7832.8769299664. The cubic root of 61353961 is about 394.4096527727.

The spelling of 61353961 in words is "sixty-one million, three hundred fifty-three thousand, nine hundred sixty-one".