155002401 has 12 divisors (see below), whose sum is σ = 229099728. Its totient is φ = 100931544.

The previous prime is 155002391. The next prime is 155002409. The reversal of 155002401 is 104200551.

It is not a de Polignac number, because 155002401 - 2¹⁴ = 154986017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155002409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199875 + ... + 200648.

It is an arithmetic number, because the mean of its divisors is an integer number (19091644).

Almost surely, 2^155002401 is an apocalyptic number.

It is an amenable number.

155002401 is a deficient number, since it is larger than the sum of its proper divisors (74097327).

155002401 is a wasteful number, since it uses less digits than its factorization.

155002401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400572 (or 400569 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 155002401 is about 12449.9960240958. The cubic root of 155002401 is about 537.1713091181.

Adding to 155002401 its reverse (104200551), we get a palindrome (259202952).

It can be divided in two parts, 155002 and 401, that added together give a triangular number (155403 = T₅₅₇).

The spelling of 155002401 in words is "one hundred fifty-five million, two thousand, four hundred one".