5631255901 has 4 divisors (see below), whose sum is σ = 5631594304. Its totient is φ = 5630917500.

The previous prime is 5631255893. The next prime is 5631255919. The reversal of 5631255901 is 1095521365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1095521365 = 5 ⋅219104273.

It is a cyclic number.

It is not a de Polignac number, because 5631255901 - 2³ = 5631255893 is a prime.

It is a super-2 number, since 2×5631255901² = 63422086045094643602, 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 (5631255601) 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, 142875 + ... + 177976.

It is an arithmetic number, because the mean of its divisors is an integer number (1407898576).

Almost surely, 2^5631255901 is an apocalyptic number.

It is an amenable number.

5631255901 is a deficient number, since it is larger than the sum of its proper divisors (338403).

5631255901 is a wasteful number, since it uses less digits than its factorization.

5631255901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338402.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 5631255901 is about 75041.6944171705. The cubic root of 5631255901 is about 1779.1057138263.

The spelling of 5631255901 in words is "five billion, six hundred thirty-one million, two hundred fifty-five thousand, nine hundred one".