121495537 has 2 divisors, whose sum is σ = 121495538. Its totient is φ = 121495536.

The previous prime is 121495523. The next prime is 121495547. The reversal of 121495537 is 735594121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106316721 + 15178816 = 10311^2 + 3896^2 .

It is an emirp because it is prime and its reverse (735594121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121495537 is a prime.

It is a super-2 number, since 2×121495537² = 29522331021836738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121495496 and 121495505.

It is not a weakly prime, because it can be changed into another prime (121495547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60747768 + 60747769.

It is an arithmetic number, because the mean of its divisors is an integer number (60747769).

Almost surely, 2^121495537 is an apocalyptic number.

It is an amenable number.

121495537 is a deficient number, since it is larger than the sum of its proper divisors (1).

121495537 is an equidigital number, since it uses as much as digits as its factorization.

121495537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 121495537 is about 11022.5013948740. The cubic root of 121495537 is about 495.2830228561.

The spelling of 121495537 in words is "one hundred twenty-one million, four hundred ninety-five thousand, five hundred thirty-seven".