1612251001 has 4 divisors (see below), whose sum is σ = 1612394100. Its totient is φ = 1612107904.

The previous prime is 1612250993. The next prime is 1612251041. The reversal of 1612251001 is 1001522161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1001522161 = 101 ⋅9916061.

It can be written as a sum of positive squares in 2 ways, for example, as 36240400 + 1576010601 = 6020^2 + 39699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612251001 - 2³ = 1612250993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1612251001.

It is not an unprimeable number, because it can be changed into a prime (1612251041) 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 3 ways as a sum of consecutive naturals, for example, 53056 + ... + 77713.

It is an arithmetic number, because the mean of its divisors is an integer number (403098525).

Almost surely, 2^1612251001 is an apocalyptic number.

It is an amenable number.

1612251001 is a deficient number, since it is larger than the sum of its proper divisors (143099).

1612251001 is a wasteful number, since it uses less digits than its factorization.

1612251001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143098.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1612251001 is about 40152.8454906997. The cubic root of 1612251001 is about 1172.5846871696.

Adding to 1612251001 its reverse (1001522161), we get a palindrome (2613773162).

The spelling of 1612251001 in words is "one billion, six hundred twelve million, two hundred fifty-one thousand, one".