77250445 has 8 divisors (see below), whose sum is σ = 96731136. Its totient is φ = 59113296.

The previous prime is 77250443. The next prime is 77250449. The reversal of 77250445 is 54405277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77250445 - 2¹ = 77250443 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 77250445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77250443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335757 + ... + 335986.

It is an arithmetic number, because the mean of its divisors is an integer number (12091392).

Almost surely, 2^77250445 is an apocalyptic number.

It is an amenable number.

77250445 is a deficient number, since it is larger than the sum of its proper divisors (19480691).

77250445 is a wasteful number, since it uses less digits than its factorization.

77250445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671771.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 77250445 is about 8789.2232307525. The cubic root of 77250445 is about 425.8928312343.

The spelling of 77250445 in words is "seventy-seven million, two hundred fifty thousand, four hundred forty-five".