2251531486 has 4 divisors (see below), whose sum is σ = 3377297232. Its totient is φ = 1125765742.

The previous prime is 2251531423. The next prime is 2251531489. The reversal of 2251531486 is 6841351522.

2251531486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6841351522 = 2 ⋅3420675761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251531489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562882870 + ... + 562882873.

It is an arithmetic number, because the mean of its divisors is an integer number (844324308).

Almost surely, 2^2251531486 is an apocalyptic number.

2251531486 is a deficient number, since it is larger than the sum of its proper divisors (1125765746).

2251531486 is a wasteful number, since it uses less digits than its factorization.

2251531486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125765745.

The product of its digits is 57600, while the sum is 37.

The square root of 2251531486 is about 47450.3054363194. The cubic root of 2251531486 is about 1310.6679355089.

The spelling of 2251531486 in words is "two billion, two hundred fifty-one million, five hundred thirty-one thousand, four hundred eighty-six".