1551242485 has 8 divisors (see below), whose sum is σ = 2004682680. Its totient is φ = 1145532864.

The previous prime is 1551242453. The next prime is 1551242489. The reversal of 1551242485 is 5842421551.

It can be written as a sum of positive squares in 4 ways, for example, as 117635716 + 1433606769 = 10846^2 + 37863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1551242485 - 2⁵ = 1551242453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551242489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11932570 + ... + 11932699.

It is an arithmetic number, because the mean of its divisors is an integer number (250585335).

Almost surely, 2^1551242485 is an apocalyptic number.

It is an amenable number.

1551242485 is a deficient number, since it is larger than the sum of its proper divisors (453440195).

1551242485 is a wasteful number, since it uses less digits than its factorization.

1551242485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23865287.

The product of its digits is 64000, while the sum is 37.

The square root of 1551242485 is about 39385.8157843658. The cubic root of 1551242485 is about 1157.6036750151.

It can be divided in two parts, 155124 and 2485, that added together give a square (157609 = 397²).

The spelling of 1551242485 in words is "one billion, five hundred fifty-one million, two hundred forty-two thousand, four hundred eighty-five".