1401553101 has 16 divisors (see below), whose sum is σ = 2042527424. Its totient is φ = 849619584.

The previous prime is 1401553079. The next prime is 1401553103. The reversal of 1401553101 is 1013551041.

It is a happy number.

It is not a de Polignac number, because 1401553101 - 2⁹ = 1401552589 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 (1401553103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265576 + ... + 270801.

It is an arithmetic number, because the mean of its divisors is an integer number (127657964).

Almost surely, 2^1401553101 is an apocalyptic number.

It is an amenable number.

1401553101 is a deficient number, since it is larger than the sum of its proper divisors (640974323).

1401553101 is a wasteful number, since it uses less digits than its factorization.

1401553101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536460.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1401553101 is about 37437.3223000791. The cubic root of 1401553101 is about 1119.1024646601.

The spelling of 1401553101 in words is "one billion, four hundred one million, five hundred fifty-three thousand, one hundred one".