151214981 has 2 divisors, whose sum is σ = 151214982. Its totient is φ = 151214980.

The previous prime is 151214969. The next prime is 151215013. The reversal of 151214981 is 189412151.

It is an a-pointer prime, because the next prime (151215013) can be obtained adding 151214981 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144240100 + 6974881 = 12010^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 151214981 - 2¹⁰ = 151213957 is a prime.

It is a super-2 number, since 2×151214981² = 45731940957660722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151214941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75607490 + 75607491.

It is an arithmetic number, because the mean of its divisors is an integer number (75607491).

Almost surely, 2^151214981 is an apocalyptic number.

It is an amenable number.

151214981 is a deficient number, since it is larger than the sum of its proper divisors (1).

151214981 is an equidigital number, since it uses as much as digits as its factorization.

151214981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 32.

The square root of 151214981 is about 12296.9500690212. The cubic root of 151214981 is about 532.7599952923.

It can be divided in two parts, 15121 and 4981, that added together give a palindrome (20102).

The spelling of 151214981 in words is "one hundred fifty-one million, two hundred fourteen thousand, nine hundred eighty-one".