100061515 has 4 divisors (see below), whose sum is σ = 120073824. Its totient is φ = 80049208.

The previous prime is 100061503. The next prime is 100061527. The reversal of 100061515 is 515160001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515160001 = 83 ⋅6206747.

It is an interprime number because it is at equal distance from previous prime (100061503) and next prime (100061527).

It is a cyclic number.

It is not a de Polignac number, because 100061515 - 2⁵ = 100061483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100061492 and 100061501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10006147 + ... + 10006156.

It is an arithmetic number, because the mean of its divisors is an integer number (30018456).

Almost surely, 2^100061515 is an apocalyptic number.

100061515 is a deficient number, since it is larger than the sum of its proper divisors (20012309).

100061515 is an equidigital number, since it uses as much as digits as its factorization.

100061515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012308.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 100061515 is about 10003.0752771335. The cubic root of 100061515 is about 464.2540396312.

It can be divided in two parts, 100061 and 515, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 100061515 in words is "one hundred million, sixty-one thousand, five hundred fifteen".