151072213 has 4 divisors (see below), whose sum is σ = 152225568. Its totient is φ = 149918860.

The previous prime is 151072189. The next prime is 151072237. The reversal of 151072213 is 312270151.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (151072189) and next prime (151072237).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151072213 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151072613) 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, 576481 + ... + 576742.

It is an arithmetic number, because the mean of its divisors is an integer number (38056392).

Almost surely, 2^151072213 is an apocalyptic number.

It is an amenable number.

151072213 is a deficient number, since it is larger than the sum of its proper divisors (1153355).

151072213 is a wasteful number, since it uses less digits than its factorization.

151072213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153354.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 151072213 is about 12291.1436815294. The cubic root of 151072213 is about 532.5922759555.

The spelling of 151072213 in words is "one hundred fifty-one million, seventy-two thousand, two hundred thirteen".