155401501 has 8 divisors (see below), whose sum is σ = 163399104. Its totient is φ = 147507360.

The previous prime is 155401489. The next prime is 155401507. The reversal of 155401501 is 105104551.

It is a happy number.

155401501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155401501 - 2¹³ = 155393309 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 (155401507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22776 + ... + 28801.

It is an arithmetic number, because the mean of its divisors is an integer number (20424888).

Almost surely, 2^155401501 is an apocalyptic number.

It is an amenable number.

155401501 is a deficient number, since it is larger than the sum of its proper divisors (7997603).

155401501 is a wasteful number, since it uses less digits than its factorization.

155401501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51731.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 155401501 is about 12466.0138376307. The cubic root of 155401501 is about 537.6319500101.

The spelling of 155401501 in words is "one hundred fifty-five million, four hundred one thousand, five hundred one".