62149981 has 2 divisors, whose sum is σ = 62149982. Its totient is φ = 62149980.

The previous prime is 62149963. The next prime is 62149991. The reversal of 62149981 is 18994126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 11256025 = 7134^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 62149981 - 2⁵ = 62149949 is a prime.

It is a super-2 number, since 2×62149981² = 7725240276600722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62149991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31074990 + 31074991.

It is an arithmetic number, because the mean of its divisors is an integer number (31074991).

Almost surely, 2^62149981 is an apocalyptic number.

It is an amenable number.

62149981 is a deficient number, since it is larger than the sum of its proper divisors (1).

62149981 is an equidigital number, since it uses as much as digits as its factorization.

62149981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 62149981 is about 7883.5259243564. The cubic root of 62149981 is about 396.1080483486.

The spelling of 62149981 in words is "sixty-two million, one hundred forty-nine thousand, nine hundred eighty-one".