77152245 has 8 divisors (see below), whose sum is σ = 123443616. Its totient is φ = 41147856.

The previous prime is 77152241. The next prime is 77152249. The reversal of 77152245 is 54225177.

It is an interprime number because it is at equal distance from previous prime (77152241) and next prime (77152249).

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

It is not a de Polignac number, because 77152245 - 2² = 77152241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77152241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2571727 + ... + 2571756.

It is an arithmetic number, because the mean of its divisors is an integer number (15430452).

Almost surely, 2^77152245 is an apocalyptic number.

It is an amenable number.

77152245 is a deficient number, since it is larger than the sum of its proper divisors (46291371).

77152245 is a wasteful number, since it uses less digits than its factorization.

77152245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143491.

The product of its digits is 19600, while the sum is 33.

The square root of 77152245 is about 8783.6350675560. The cubic root of 77152245 is about 425.7122911305.

The spelling of 77152245 in words is "seventy-seven million, one hundred fifty-two thousand, two hundred forty-five".