61478133 has 4 divisors (see below), whose sum is σ = 81970848. Its totient is φ = 40985420.

The previous prime is 61478117. The next prime is 61478141. The reversal of 61478133 is 33187416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61478133 - 2⁴ = 61478117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61478094 and 61478103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61478113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10246353 + ... + 10246358.

It is an arithmetic number, because the mean of its divisors is an integer number (20492712).

Almost surely, 2^61478133 is an apocalyptic number.

It is an amenable number.

61478133 is a deficient number, since it is larger than the sum of its proper divisors (20492715).

61478133 is a wasteful number, since it uses less digits than its factorization.

61478133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20492714.

The product of its digits is 12096, while the sum is 33.

The square root of 61478133 is about 7840.7992577288. The cubic root of 61478133 is about 394.6755504827.

The spelling of 61478133 in words is "sixty-one million, four hundred seventy-eight thousand, one hundred thirty-three".