151363621 has 4 divisors (see below), whose sum is σ = 157944672. Its totient is φ = 144782572.

The previous prime is 151363609. The next prime is 151363627. The reversal of 151363621 is 126363151.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126363151 = 8677 ⋅14563.

It is a cyclic number.

It is not a de Polignac number, because 151363621 - 2⁷ = 151363493 is a prime.

It is a super-3 number, since 3×151363621³ (a number of 26 digits) contains 333 as substring.

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 151363621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151363627) 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, 3290491 + ... + 3290536.

It is an arithmetic number, because the mean of its divisors is an integer number (39486168).

Almost surely, 2^151363621 is an apocalyptic number.

It is an amenable number.

151363621 is a deficient number, since it is larger than the sum of its proper divisors (6581051).

151363621 is an equidigital number, since it uses as much as digits as its factorization.

151363621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6581050.

The product of its digits is 3240, while the sum is 28.

The square root of 151363621 is about 12302.9923595847. The cubic root of 151363621 is about 532.9345007378.

The spelling of 151363621 in words is "one hundred fifty-one million, three hundred sixty-three thousand, six hundred twenty-one".