77082151 has 4 divisors (see below), whose sum is σ = 79568704. Its totient is φ = 74595600.

The previous prime is 77082127. The next prime is 77082167. The reversal of 77082151 is 15128077.

It is a happy number.

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 77082151 - 2¹¹ = 77080103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2486521 = 77082151 / (7 + 7 + 0 + 8 + 2 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77082121) 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, 1243230 + ... + 1243291.

It is an arithmetic number, because the mean of its divisors is an integer number (19892176).

Almost surely, 2^77082151 is an apocalyptic number.

77082151 is a deficient number, since it is larger than the sum of its proper divisors (2486553).

77082151 is a wasteful number, since it uses less digits than its factorization.

77082151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486552.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 77082151 is about 8779.6441271842. The cubic root of 77082151 is about 425.5833300157.

The spelling of 77082151 in words is "seventy-seven million, eighty-two thousand, one hundred fifty-one".