3752021 has 8 divisors (see below), whose sum is σ = 4617984. Its totient is φ = 2968560.

The previous prime is 3752017. The next prime is 3752039. The reversal of 3752021 is 1202573.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3752021 - 2² = 3752017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3751984 and 3752002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3752081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20525 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (577248).

Almost surely, 2^3752021 is an apocalyptic number.

It is an amenable number.

3752021 is a deficient number, since it is larger than the sum of its proper divisors (865963).

3752021 is a wasteful number, since it uses less digits than its factorization.

3752021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41251.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 3752021 is about 1937.0134227723. The cubic root of 3752021 is about 155.3895301382.

Adding to 3752021 its reverse (1202573), we get a palindrome (4954594).

The spelling of 3752021 in words is "three million, seven hundred fifty-two thousand, twenty-one".