61954547 has 4 divisors (see below), whose sum is σ = 62042640. Its totient is φ = 61866456.

The previous prime is 61954517. The next prime is 61954559. The reversal of 61954547 is 74545916.

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 61954547 - 2²² = 57760243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61954517) 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, 42983 + ... + 44400.

It is an arithmetic number, because the mean of its divisors is an integer number (15510660).

Almost surely, 2^61954547 is an apocalyptic number.

61954547 is a deficient number, since it is larger than the sum of its proper divisors (88093).

61954547 is an equidigital number, since it uses as much as digits as its factorization.

61954547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88092.

The product of its digits is 151200, while the sum is 41.

The square root of 61954547 is about 7871.1210764414. The cubic root of 61954547 is about 395.6924179427.

The spelling of 61954547 in words is "sixty-one million, nine hundred fifty-four thousand, five hundred forty-seven".