155241497 has 6 divisors (see below), whose sum is σ = 156774042. Its totient is φ = 153723792.

The previous prime is 155241491. The next prime is 155241503. The reversal of 155241497 is 794142551.

It is an interprime number because it is at equal distance from previous prime (155241491) and next prime (155241503).

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 73085401 = 9064^2 + 8549^2 .

It is not a de Polignac number, because 155241497 - 2²⁴ = 138464281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155241497.

It is not an unprimeable number, because it can be changed into a prime (155241491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3293 + ... + 17925.

It is an arithmetic number, because the mean of its divisors is an integer number (26129007).

Almost surely, 2^155241497 is an apocalyptic number.

It is an amenable number.

155241497 is a deficient number, since it is larger than the sum of its proper divisors (1532545).

155241497 is an equidigital number, since it uses as much as digits as its factorization.

155241497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14839 (or 14736 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 155241497 is about 12459.5945760687. The cubic root of 155241497 is about 537.4473683457.

The spelling of 155241497 in words is "one hundred fifty-five million, two hundred forty-one thousand, four hundred ninety-seven".