2145550631 has 8 divisors (see below), whose sum is σ = 2461108224. Its totient is φ = 1832255640.

The previous prime is 2145550613. The next prime is 2145550639. The reversal of 2145550631 is 1360555412.

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 2145550631 - 2⁶ = 2145550567 is a prime.

It is a super-2 number, since 2×2145550631² = 9206775020368996322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145550639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563615 + ... + 567408.

It is an arithmetic number, because the mean of its divisors is an integer number (307638528).

Almost surely, 2^2145550631 is an apocalyptic number.

2145550631 is a deficient number, since it is larger than the sum of its proper divisors (315557593).

2145550631 is a wasteful number, since it uses less digits than its factorization.

2145550631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131301.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2145550631 is about 46320.0888492239. The cubic root of 2145550631 is about 1289.7719347232.

The spelling of 2145550631 in words is "two billion, one hundred forty-five million, five hundred fifty thousand, six hundred thirty-one".