155057015401 has 4 divisors (see below), whose sum is σ = 156429201492. Its totient is φ = 153684829312.

The previous prime is 155057015389. The next prime is 155057015411. The reversal of 155057015401 is 104510750551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60653838400 + 94403177001 = 246280^2 + 307251^2 .

It is a cyclic number.

It is not a de Polignac number, because 155057015401 - 2⁵ = 155057015369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155057015411) 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, 686092876 + ... + 686093101.

It is an arithmetic number, because the mean of its divisors is an integer number (39107300373).

Almost surely, 2^155057015401 is an apocalyptic number.

It is an amenable number.

155057015401 is a deficient number, since it is larger than the sum of its proper divisors (1372186091).

155057015401 is a wasteful number, since it uses less digits than its factorization.

155057015401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372186090.

The product of its (nonzero) digits is 17500, while the sum is 34.

Adding to 155057015401 its reverse (104510750551), we get a palindrome (259567765952).

The spelling of 155057015401 in words is "one hundred fifty-five billion, fifty-seven million, fifteen thousand, four hundred one".