1972045 has 4 divisors (see below), whose sum is σ = 2366460. Its totient is φ = 1577632.

The previous prime is 1972037. The next prime is 1972049. The reversal of 1972045 is 5402791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 407044 = 1251^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972045 - 2³ = 1972037 is a prime.

It is a super-2 number, since 2×1972045² = 7777922964050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197200 + ... + 197209.

It is an arithmetic number, because the mean of its divisors is an integer number (591615).

2^1972045 is an apocalyptic number.

It is an amenable number.

1972045 is a deficient number, since it is larger than the sum of its proper divisors (394415).

1972045 is an equidigital number, since it uses as much as digits as its factorization.

1972045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394414.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1972045 is about 1404.2951968870. The cubic root of 1972045 is about 125.4023303198.

The spelling of 1972045 in words is "one million, nine hundred seventy-two thousand, forty-five".