27780151 has 8 divisors (see below), whose sum is σ = 32063904. Its totient is φ = 23575200.

The previous prime is 27780131. The next prime is 27780161. The reversal of 27780151 is 15108772.

It is a happy number.

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 27780151 - 2¹⁷ = 27649079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27780131) 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, 18940 + ... + 20353.

It is an arithmetic number, because the mean of its divisors is an integer number (4007988).

Almost surely, 2^27780151 is an apocalyptic number.

27780151 is a deficient number, since it is larger than the sum of its proper divisors (4283753).

27780151 is a wasteful number, since it uses less digits than its factorization.

27780151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39401.

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

The square root of 27780151 is about 5270.6879057671. The cubic root of 27780151 is about 302.8620567550.

The spelling of 27780151 in words is "twenty-seven million, seven hundred eighty thousand, one hundred fifty-one".