61158355 has 4 divisors (see below), whose sum is σ = 73390032. Its totient is φ = 48926680.

The previous prime is 61158353. The next prime is 61158371. The reversal of 61158355 is 55385116.

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

It is not a de Polignac number, because 61158355 - 2¹ = 61158353 is a prime.

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 61158355.

It is not an unprimeable number, because it can be changed into a prime (61158353) 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, 6115831 + ... + 6115840.

It is an arithmetic number, because the mean of its divisors is an integer number (18347508).

Almost surely, 2^61158355 is an apocalyptic number.

61158355 is a deficient number, since it is larger than the sum of its proper divisors (12231677).

61158355 is a wasteful number, since it uses less digits than its factorization.

61158355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231676.

The product of its digits is 18000, while the sum is 34.

The square root of 61158355 is about 7820.3807452067. The cubic root of 61158355 is about 393.9900600445.

The spelling of 61158355 in words is "sixty-one million, one hundred fifty-eight thousand, three hundred fifty-five".