61502017 has 4 divisors (see below), whose sum is σ = 61559380. Its totient is φ = 61444656.

The previous prime is 61502003. The next prime is 61502041. The reversal of 61502017 is 71020516.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60855601 + 646416 = 7801^2 + 804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61502017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61502317) 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, 27042 + ... + 29227.

It is an arithmetic number, because the mean of its divisors is an integer number (15389845).

Almost surely, 2^61502017 is an apocalyptic number.

It is an amenable number.

61502017 is a deficient number, since it is larger than the sum of its proper divisors (57363).

61502017 is a wasteful number, since it uses less digits than its factorization.

61502017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57362.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 61502017 is about 7842.3221688477. The cubic root of 61502017 is about 394.7266538043.

The spelling of 61502017 in words is "sixty-one million, five hundred two thousand, seventeen".