3752921 has 2 divisors, whose sum is σ = 3752922. Its totient is φ = 3752920.

The previous prime is 3752909. The next prime is 3752923. The reversal of 3752921 is 1292573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1960000 + 1792921 = 1400^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 3752921 - 2¹⁸ = 3490777 is a prime.

Together with 3752923, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3¹³ + 7³ + 5 + 2¹¹ + 9⁵ + 2²¹ + 1 .

It is not a weakly prime, because it can be changed into another prime (3752923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1876460 + 1876461.

It is an arithmetic number, because the mean of its divisors is an integer number (1876461).

Almost surely, 2^3752921 is an apocalyptic number.

It is an amenable number.

3752921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3752921 is an equidigital number, since it uses as much as digits as its factorization.

3752921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 3752921 is about 1937.2457252502. The cubic root of 3752921 is about 155.4019536114.

The spelling of 3752921 in words is "three million, seven hundred fifty-two thousand, nine hundred twenty-one".