155777214 has 8 divisors (see below), whose sum is σ = 311554440. Its totient is φ = 51925736.

The previous prime is 155777213. The next prime is 155777227. The reversal of 155777214 is 412777551.

It is a happy number.

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

155777214 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155777213) 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, 12981429 + ... + 12981440.

It is an arithmetic number, because the mean of its divisors is an integer number (38944305).

Almost surely, 2^155777214 is an apocalyptic number.

155777214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155777214 is a wasteful number, since it uses less digits than its factorization.

155777214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25962874.

The product of its digits is 68600, while the sum is 39.

The square root of 155777214 is about 12481.0742326132. The cubic root of 155777214 is about 538.0648774965.

It can be divided in two parts, 15577 and 7214, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 155777214 in words is "one hundred fifty-five million, seven hundred seventy-seven thousand, two hundred fourteen".