1554240012131 has 4 divisors (see below), whose sum is σ = 1556012236512. Its totient is φ = 1552467787752.

The previous prime is 1554240012097. The next prime is 1554240012167. The reversal of 1554240012131 is 1312100424551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1554240012131 - 2²⁶ = 1554172903267 is a prime.

It is a super-2 number, since 2×1554240012131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1554240012094 and 1554240012103.

It is not an unprimeable number, because it can be changed into a prime (1554240012331) 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, 886110875 + ... + 886112628.

It is an arithmetic number, because the mean of its divisors is an integer number (389003059128).

Almost surely, 2^{1554240012131} is an apocalyptic number.

1554240012131 is a deficient number, since it is larger than the sum of its proper divisors (1772224381).

1554240012131 is an equidigital number, since it uses as much as digits as its factorization.

1554240012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772224380.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1554240012131 its reverse (1312100424551), we get a palindrome (2866340436682).

The spelling of 1554240012131 in words is "one trillion, five hundred fifty-four billion, two hundred forty million, twelve thousand, one hundred thirty-one".