77490501 has 8 divisors (see below), whose sum is σ = 112713504. Its totient is φ = 46963920.

The previous prime is 77490499. The next prime is 77490521. The reversal of 77490501 is 10509477.

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

It is not a de Polignac number, because 77490501 - 2¹ = 77490499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2348197 = 77490501 / (7 + 7 + 4 + 9 + 0 + 5 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77490521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174066 + ... + 1174131.

It is an arithmetic number, because the mean of its divisors is an integer number (14089188).

Almost surely, 2^77490501 is an apocalyptic number.

It is an amenable number.

77490501 is a deficient number, since it is larger than the sum of its proper divisors (35223003).

77490501 is a wasteful number, since it uses less digits than its factorization.

77490501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348211.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 77490501 is about 8802.8689073506. The cubic root of 77490501 is about 426.3335294947. Note that the first 3 decimals are identical.

Adding to 77490501 its reverse (10509477), we get a palindrome (87999978).

The spelling of 77490501 in words is "seventy-seven million, four hundred ninety thousand, five hundred one".