155314300421 has 4 divisors (see below), whose sum is σ = 177502057632. Its totient is φ = 133126543212.

The previous prime is 155314300403. The next prime is 155314300439. The reversal of 155314300421 is 124003413551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (155314300403) and next prime (155314300439).

It is a cyclic number.

It is not a de Polignac number, because 155314300421 - 2⁶ = 155314300357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155314300441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11093878595 + ... + 11093878608.

It is an arithmetic number, because the mean of its divisors is an integer number (44375514408).

Almost surely, 2^155314300421 is an apocalyptic number.

It is an amenable number.

155314300421 is a deficient number, since it is larger than the sum of its proper divisors (22187757211).

155314300421 is an equidigital number, since it uses as much as digits as its factorization.

155314300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22187757210.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 155314300421 its reverse (124003413551), we get a palindrome (279317713972).

The spelling of 155314300421 in words is "one hundred fifty-five billion, three hundred fourteen million, three hundred thousand, four hundred twenty-one".