1973515 has 12 divisors (see below), whose sum is σ = 2490192. Its totient is φ = 1498640.

The previous prime is 1973509. The next prime is 1973519. The reversal of 1973515 is 5153791.

1973515 = 5⁶ + 6⁶ + ... + 10⁶.

It is not a de Polignac number, because 1973515 - 2³ = 1973507 is a prime.

It is a super-2 number, since 2×1973515² = 7789522910450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1973519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15000 + ... + 15130.

It is an arithmetic number, because the mean of its divisors is an integer number (207516).

2^1973515 is an apocalyptic number.

1973515 is a deficient number, since it is larger than the sum of its proper divisors (516677).

1973515 is an equidigital number, since it uses as much as digits as its factorization.

1973515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 159 counting only the distinct ones).

The product of its digits is 4725, while the sum is 31.

The square root of 1973515 is about 1404.8184936140. The cubic root of 1973515 is about 125.4334816781.

The spelling of 1973515 in words is "one million, nine hundred seventy-three thousand, five hundred fifteen".