61545467 has 4 divisors (see below), whose sum is σ = 63208896. Its totient is φ = 59882040.

The previous prime is 61545439. The next prime is 61545481. The reversal of 61545467 is 76454516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61545467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61545467.

It is not an unprimeable number, because it can be changed into a prime (61545067) 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, 831659 + ... + 831732.

It is an arithmetic number, because the mean of its divisors is an integer number (15802224).

Almost surely, 2^61545467 is an apocalyptic number.

61545467 is a deficient number, since it is larger than the sum of its proper divisors (1663429).

61545467 is a wasteful number, since it uses less digits than its factorization.

61545467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663428.

The product of its digits is 100800, while the sum is 38.

The square root of 61545467 is about 7845.0919051341. The cubic root of 61545467 is about 394.8195875356.

The spelling of 61545467 in words is "sixty-one million, five hundred forty-five thousand, four hundred sixty-seven".