61136011 has 4 divisors (see below), whose sum is σ = 61156912. Its totient is φ = 61115112.

The previous prime is 61136003. The next prime is 61136017. The reversal of 61136011 is 11063116.

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 61136011 - 2³ = 61136003 is a prime.

It is a super-2 number, since 2×61136011² = 7475223681984242, which contains 22 as substring.

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 61136011.

It is not an unprimeable number, because it can be changed into a prime (61136017) 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, 5175 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (15289228).

Almost surely, 2^61136011 is an apocalyptic number.

61136011 is a deficient number, since it is larger than the sum of its proper divisors (20901).

61136011 is a wasteful number, since it uses less digits than its factorization.

61136011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 61136011 is about 7818.9520397557. The cubic root of 61136011 is about 393.9420732175.

Adding to 61136011 its reverse (11063116), we get a palindrome (72199127).

The spelling of 61136011 in words is "sixty-one million, one hundred thirty-six thousand, eleven".