1551120041 has 4 divisors (see below), whose sum is σ = 1562960784. Its totient is φ = 1539279300.

The previous prime is 1551120007. The next prime is 1551120073. The reversal of 1551120041 is 1400211551.

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: 1400211551 = 2137 ⋅655223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551120041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1551119995 and 1551120022.

It is not an unprimeable number, because it can be changed into a prime (1551120541) 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, 5920175 + ... + 5920436.

It is an arithmetic number, because the mean of its divisors is an integer number (390740196).

Almost surely, 2^1551120041 is an apocalyptic number.

It is an amenable number.

1551120041 is a deficient number, since it is larger than the sum of its proper divisors (11840743).

1551120041 is a wasteful number, since it uses less digits than its factorization.

1551120041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11840742.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1551120041 is about 39384.2613362241. The cubic root of 1551120041 is about 1157.5732165589.

Adding to 1551120041 its reverse (1400211551), we get a palindrome (2951331592).

The spelling of 1551120041 in words is "one billion, five hundred fifty-one million, one hundred twenty thousand, forty-one".