1972501 has 4 divisors (see below), whose sum is σ = 2009772. Its totient is φ = 1935232.

The previous prime is 1972483. The next prime is 1972511. The reversal of 1972501 is 1052791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1052791 = 31 ⋅33961.

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 819025 = 1074^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972501 - 2¹⁵ = 1939733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972511) 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, 18556 + ... + 18661.

It is an arithmetic number, because the mean of its divisors is an integer number (502443).

2^1972501 is an apocalyptic number.

It is an amenable number.

1972501 is a deficient number, since it is larger than the sum of its proper divisors (37271).

1972501 is an equidigital number, since it uses as much as digits as its factorization.

1972501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37270.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1972501 is about 1404.4575465282. The cubic root of 1972501 is about 125.4119952541.

The spelling of 1972501 in words is "one million, nine hundred seventy-two thousand, five hundred one".