61454047 has 4 divisors (see below), whose sum is σ = 61631496. Its totient is φ = 61276600.

The previous prime is 61454027. The next prime is 61454093. The reversal of 61454047 is 74045416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61454047 - 2¹⁵ = 61421279 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61454027) 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, 88204 + ... + 88897.

It is an arithmetic number, because the mean of its divisors is an integer number (15407874).

Almost surely, 2^61454047 is an apocalyptic number.

61454047 is a deficient number, since it is larger than the sum of its proper divisors (177449).

61454047 is a wasteful number, since it uses less digits than its factorization.

61454047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177448.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 61454047 is about 7839.2631669054. The cubic root of 61454047 is about 394.6240015467.

The spelling of 61454047 in words is "sixty-one million, four hundred fifty-four thousand, forty-seven".