61478371 has 2 divisors, whose sum is σ = 61478372. Its totient is φ = 61478370.

The previous prime is 61478359. The next prime is 61478399. The reversal of 61478371 is 17387416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61478371 - 2¹¹ = 61476323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61478371.

It is not a weakly prime, because it can be changed into another prime (61478321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30739185 + 30739186.

It is an arithmetic number, because the mean of its divisors is an integer number (30739186).

Almost surely, 2^61478371 is an apocalyptic number.

61478371 is a deficient number, since it is larger than the sum of its proper divisors (1).

61478371 is an equidigital number, since it uses as much as digits as its factorization.

61478371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 61478371 is about 7840.8144347383. The cubic root of 61478371 is about 394.6760597839.

The spelling of 61478371 in words is "sixty-one million, four hundred seventy-eight thousand, three hundred seventy-one".