2255401987 has 8 divisors (see below), whose sum is σ = 2323143680. Its totient is φ = 2188355400.

The previous prime is 2255401963. The next prime is 2255402003. The reversal of 2255401987 is 7891045522.

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 2255401987 - 2³¹ = 107918339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2255401927) 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, 167187 + ... + 180172.

It is an arithmetic number, because the mean of its divisors is an integer number (290392960).

Almost surely, 2^2255401987 is an apocalyptic number.

2255401987 is a deficient number, since it is larger than the sum of its proper divisors (67741693).

2255401987 is a wasteful number, since it uses less digits than its factorization.

2255401987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347553.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 2255401987 is about 47491.0727084575. The cubic root of 2255401987 is about 1311.4185412595.

The spelling of 2255401987 in words is "two billion, two hundred fifty-five million, four hundred one thousand, nine hundred eighty-seven".