4072253621 has 4 divisors (see below), whose sum is σ = 4090515072. Its totient is φ = 4053992172.

The previous prime is 4072253599. The next prime is 4072253693. The reversal of 4072253621 is 1263522704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4072253621 - 2⁶ = 4072253557 is a prime.

It is a super-2 number, since 2×4072253621² = 33166499107495223282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4072253021) 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, 9130391 + ... + 9130836.

It is an arithmetic number, because the mean of its divisors is an integer number (1022628768).

Almost surely, 2^4072253621 is an apocalyptic number.

It is an amenable number.

4072253621 is a deficient number, since it is larger than the sum of its proper divisors (18261451).

4072253621 is a wasteful number, since it uses less digits than its factorization.

4072253621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18261450.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 4072253621 is about 63814.2117478544. The cubic root of 4072253621 is about 1596.9020290491.

The spelling of 4072253621 in words is "four billion, seventy-two million, two hundred fifty-three thousand, six hundred twenty-one".