1001315551 has 8 divisors (see below), whose sum is σ = 1011458000. Its totient is φ = 991215360.

The previous prime is 1001315519. The next prime is 1001315563. The reversal of 1001315551 is 1555131001.

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 1001315551 - 2⁵ = 1001315519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005315551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38191 + ... + 58831.

It is an arithmetic number, because the mean of its divisors is an integer number (126432250).

Almost surely, 2^1001315551 is an apocalyptic number.

1001315551 is a deficient number, since it is larger than the sum of its proper divisors (10142449).

1001315551 is a wasteful number, since it uses less digits than its factorization.

1001315551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21129.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 1001315551 is about 31643.5704527792. The cubic root of 1001315551 is about 1000.4383248433.

Adding to 1001315551 its reverse (1555131001), we get a palindrome (2556446552).

The spelling of 1001315551 in words is "one billion, one million, three hundred fifteen thousand, five hundred fifty-one".