155011453 has 2 divisors, whose sum is σ = 155011454. Its totient is φ = 155011452.

The previous prime is 155011403. The next prime is 155011469. The reversal of 155011453 is 354110551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126045529 + 28965924 = 11227^2 + 5382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155011453 is a prime.

It is a super-2 number, since 2×155011453² = 48057101122342418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155011403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77505726 + 77505727.

It is an arithmetic number, because the mean of its divisors is an integer number (77505727).

Almost surely, 2^155011453 is an apocalyptic number.

It is an amenable number.

155011453 is a deficient number, since it is larger than the sum of its proper divisors (1).

155011453 is an equidigital number, since it uses as much as digits as its factorization.

155011453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 155011453 is about 12450.3595530410. The cubic root of 155011453 is about 537.1817656874.

The spelling of 155011453 in words is "one hundred fifty-five million, eleven thousand, four hundred fifty-three".