61070549 has 4 divisors (see below), whose sum is σ = 63176460. Its totient is φ = 58964640.

The previous prime is 61070509. The next prime is 61070561. The reversal of 61070549 is 94507016.

It is a happy number.

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 45468049 + 15602500 = 6743^2 + 3950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61070549 is a prime.

It is a super-2 number, since 2×61070549² = 7459223910322802, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61070509) 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, 1052912 + ... + 1052969.

It is an arithmetic number, because the mean of its divisors is an integer number (15794115).

Almost surely, 2^61070549 is an apocalyptic number.

It is an amenable number.

61070549 is a deficient number, since it is larger than the sum of its proper divisors (2105911).

61070549 is a wasteful number, since it uses less digits than its factorization.

61070549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105910.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 61070549 is about 7814.7648077213. The cubic root of 61070549 is about 393.8014171874.

The spelling of 61070549 in words is "sixty-one million, seventy thousand, five hundred forty-nine".