72070151 has 2 divisors, whose sum is σ = 72070152. Its totient is φ = 72070150.

The previous prime is 72070147. The next prime is 72070177. The reversal of 72070151 is 15107027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72070151 - 2² = 72070147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72070111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36035075 + 36035076.

It is an arithmetic number, because the mean of its divisors is an integer number (36035076).

Almost surely, 2^72070151 is an apocalyptic number.

72070151 is a deficient number, since it is larger than the sum of its proper divisors (1).

72070151 is an equidigital number, since it uses as much as digits as its factorization.

72070151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 72070151 is about 8489.4140551631. The cubic root of 72070151 is about 416.1518318280.

Adding to 72070151 its reverse (15107027), we get a palindrome (87177178).

The spelling of 72070151 in words is "seventy-two million, seventy thousand, one hundred fifty-one".