1326150551 has 4 divisors (see below), whose sum is σ = 1446709704. Its totient is φ = 1205591400.

The previous prime is 1326150509. The next prime is 1326150563. The reversal of 1326150551 is 1550516231.

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 1326150551 - 2¹⁸ = 1325888407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326150151) 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, 60279560 + ... + 60279581.

It is an arithmetic number, because the mean of its divisors is an integer number (361677426).

Almost surely, 2^1326150551 is an apocalyptic number.

1326150551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1326150551 is a deficient number, since it is larger than the sum of its proper divisors (120559153).

1326150551 is a wasteful number, since it uses less digits than its factorization.

1326150551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120559152.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1326150551 is about 36416.3500504924. The cubic root of 1326150551 is about 1098.6624378661.

Adding to 1326150551 its reverse (1550516231), we get a palindrome (2876666782).

The spelling of 1326150551 in words is "one billion, three hundred twenty-six million, one hundred fifty thousand, five hundred fifty-one".