2554400865 has 8 divisors (see below), whose sum is σ = 4087041408. Its totient is φ = 1362347120.

The previous prime is 2554400753. The next prime is 2554400903. The reversal of 2554400865 is 5680044552.

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

It is not a de Polignac number, because 2554400865 - 2¹⁵ = 2554368097 is a prime.

It is a super-2 number, since 2×2554400865² = 13049927558225496450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85146681 + ... + 85146710.

It is an arithmetic number, because the mean of its divisors is an integer number (510880176).

Almost surely, 2^2554400865 is an apocalyptic number.

It is an amenable number.

2554400865 is a deficient number, since it is larger than the sum of its proper divisors (1532640543).

2554400865 is a wasteful number, since it uses less digits than its factorization.

2554400865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170293399.

The product of its (nonzero) digits is 192000, while the sum is 39.

The square root of 2554400865 is about 50541.0809639050. The cubic root of 2554400865 is about 1366.9826974548.

The spelling of 2554400865 in words is "two billion, five hundred fifty-four million, four hundred thousand, eight hundred sixty-five".