61852891 has 4 divisors (see below), whose sum is σ = 62109784. Its totient is φ = 61596000.

The previous prime is 61852873. The next prime is 61852907. The reversal of 61852891 is 19825816.

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 61852891 - 2¹¹ = 61850843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61852801) 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, 128085 + ... + 128566.

It is an arithmetic number, because the mean of its divisors is an integer number (15527446).

Almost surely, 2^61852891 is an apocalyptic number.

61852891 is a deficient number, since it is larger than the sum of its proper divisors (256893).

61852891 is a wasteful number, since it uses less digits than its factorization.

61852891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256892.

The product of its digits is 34560, while the sum is 40.

The square root of 61852891 is about 7864.6608954233. The cubic root of 61852891 is about 395.4758800086.

The spelling of 61852891 in words is "sixty-one million, eight hundred fifty-two thousand, eight hundred ninety-one".