61455027 has 4 divisors (see below), whose sum is σ = 81940040. Its totient is φ = 40970016.

The previous prime is 61455001. The next prime is 61455047. The reversal of 61455027 is 72055416.

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

It is a de Polignac number, because none of the positive numbers 2^k-61455027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61454985 and 61455003.

It is not an unprimeable number, because it can be changed into a prime (61455047) 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, 10242502 + ... + 10242507.

It is an arithmetic number, because the mean of its divisors is an integer number (20485010).

Almost surely, 2^61455027 is an apocalyptic number.

61455027 is a deficient number, since it is larger than the sum of its proper divisors (20485013).

61455027 is a wasteful number, since it uses less digits than its factorization.

61455027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20485012.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 61455027 is about 7839.3256725308. The cubic root of 61455027 is about 394.6260992088.

The spelling of 61455027 in words is "sixty-one million, four hundred fifty-five thousand, twenty-seven".