61454479 has 2 divisors, whose sum is σ = 61454480. Its totient is φ = 61454478.

The previous prime is 61454467. The next prime is 61454513. The reversal of 61454479 is 97445416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61454479 - 2¹¹ = 61452431 is a prime.

It is a super-2 number, since 2×61454479² = 7553305978322882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61454429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30727239 + 30727240.

It is an arithmetic number, because the mean of its divisors is an integer number (30727240).

Almost surely, 2^61454479 is an apocalyptic number.

61454479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61454479 is an equidigital number, since it uses as much as digits as its factorization.

61454479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 61454479 is about 7839.2907204670. The cubic root of 61454479 is about 394.6249262331.

The spelling of 61454479 in words is "sixty-one million, four hundred fifty-four thousand, four hundred seventy-nine".