75820851 has 6 divisors (see below), whose sum is σ = 109519020. Its totient is φ = 50547228.

The previous prime is 75820847. The next prime is 75820859. The reversal of 75820851 is 15802857.

It is not a de Polignac number, because 75820851 - 2² = 75820847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75820859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4212261 + ... + 4212278.

It is an arithmetic number, because the mean of its divisors is an integer number (18253170).

Almost surely, 2^75820851 is an apocalyptic number.

75820851 is a deficient number, since it is larger than the sum of its proper divisors (33698169).

75820851 is a wasteful number, since it uses less digits than its factorization.

75820851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424545 (or 8424542 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 75820851 is about 8707.5169250482. The cubic root of 75820851 is about 423.2492704448.

It can be divided in two parts, 758 and 20851, that added together give a square (21609 = 147²).

The spelling of 75820851 in words is "seventy-five million, eight hundred twenty thousand, eight hundred fifty-one".