155101540 has 96 divisors (see below), whose sum is σ = 380588544. Its totient is φ = 52469760.

The previous prime is 155101537. The next prime is 155101553. The reversal of 155101540 is 45101551.

It is a happy number.

155101540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422437 + ... + 422803.

It is an arithmetic number, because the mean of its divisors is an integer number (3964464).

Almost surely, 2^155101540 is an apocalyptic number.

155101540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155101540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190294272).

155101540 is an abundant number, since it is smaller than the sum of its proper divisors (225487004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155101540 is a wasteful number, since it uses less digits than its factorization.

155101540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

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

The square root of 155101540 is about 12453.9768748782. The cubic root of 155101540 is about 537.2858090146.

The spelling of 155101540 in words is "one hundred fifty-five million, one hundred one thousand, five hundred forty".