1972153 has 4 divisors (see below), whose sum is σ = 2088180. Its totient is φ = 1856128.

The previous prime is 1972147. The next prime is 1972169. The reversal of 1972153 is 3512791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3512791 = 1733 ⋅2027.

It can be written as a sum of positive squares in 2 ways, for example, as 779689 + 1192464 = 883^2 + 1092^2 .

It is not a de Polignac number, because 1972153 - 2⁵ = 1972121 is a prime.

It is a Duffinian number.

1972153 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1972123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57988 + ... + 58021.

It is an arithmetic number, because the mean of its divisors is an integer number (522045).

2^1972153 is an apocalyptic number.

It is an amenable number.

1972153 is a deficient number, since it is larger than the sum of its proper divisors (116027).

1972153 is a wasteful number, since it uses less digits than its factorization.

1972153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116026.

The product of its digits is 1890, while the sum is 28.

The square root of 1972153 is about 1404.3336498140. Note that the first 3 decimals coincide. The cubic root of 1972153 is about 125.4046195178.

The spelling of 1972153 in words is "one million, nine hundred seventy-two thousand, one hundred fifty-three".