1151621 has 8 divisors (see below), whose sum is σ = 1188000. Its totient is φ = 1115920.

The previous prime is 1151611. The next prime is 1151629. The reversal of 1151621 is 1261511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151621 - 2¹⁴ = 1135237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151629) 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, 7655 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (148500).

2^1151621 is an apocalyptic number.

It is an amenable number.

1151621 is a deficient number, since it is larger than the sum of its proper divisors (36379).

1151621 is a wasteful number, since it uses less digits than its factorization.

1151621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its digits is 60, while the sum is 17.

The square root of 1151621 is about 1073.1360584753. The cubic root of 1151621 is about 104.8181584312.

The spelling of 1151621 in words is "one million, one hundred fifty-one thousand, six hundred twenty-one".