2061515001 has 64 divisors (see below), whose sum is σ = 3543257088. Its totient is φ = 1036240128.

The previous prime is 2061514999. The next prime is 2061515003. The reversal of 2061515001 is 1005151602.

It is an interprime number because it is at equal distance from previous prime (2061514999) and next prime (2061515003).

It is not a de Polignac number, because 2061515001 - 2¹ = 2061514999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2061515003) 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 63 ways as a sum of consecutive naturals, for example, 2492350 + ... + 2493176.

It is an arithmetic number, because the mean of its divisors is an integer number (55363392).

Almost surely, 2^2061515001 is an apocalyptic number.

2061515001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2061515001 is a deficient number, since it is larger than the sum of its proper divisors (1481742087).

2061515001 is a wasteful number, since it uses less digits than its factorization.

2061515001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2061515001 is about 45403.9095343121. The cubic root of 2061515001 is about 1272.7081732339.

Adding to 2061515001 its reverse (1005151602), we get a palindrome (3066666603).

The spelling of 2061515001 in words is "two billion, sixty-one million, five hundred fifteen thousand, one".