1551151545 has 16 divisors (see below), whose sum is σ = 2612466240. Its totient is φ = 783739584.

The previous prime is 1551151489. The next prime is 1551151549. The reversal of 1551151545 is 5451511551.

It is not a de Polignac number, because 1551151545 - 2⁹ = 1551151033 is a prime.

It is a super-2 number, since 2×1551151545² = 4812142231111774050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1551151549) 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 15 ways as a sum of consecutive naturals, for example, 2721034 + ... + 2721603.

It is an arithmetic number, because the mean of its divisors is an integer number (163279140).

Almost surely, 2^1551151545 is an apocalyptic number.

1551151545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1551151545 is a deficient number, since it is larger than the sum of its proper divisors (1061314695).

1551151545 is a wasteful number, since it uses less digits than its factorization.

1551151545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442664.

The product of its digits is 12500, while the sum is 33.

The square root of 1551151545 is about 39384.6612909138. The cubic root of 1551151545 is about 1157.5810534636.

The spelling of 1551151545 in words is "one billion, five hundred fifty-one million, one hundred fifty-one thousand, five hundred forty-five".