1401523245 has 12 divisors (see below), whose sum is σ = 2429307036. Its totient is φ = 747479040.

The previous prime is 1401523243. The next prime is 1401523267. The reversal of 1401523245 is 5423251041.

It can be written as a sum of positive squares in 2 ways, for example, as 1018694889 + 382828356 = 31917^2 + 19566^2 .

It is not a de Polignac number, because 1401523245 - 2¹ = 1401523243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401523243) 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, 15572436 + ... + 15572525.

It is an arithmetic number, because the mean of its divisors is an integer number (202442253).

Almost surely, 2^1401523245 is an apocalyptic number.

1401523245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401523245 is a deficient number, since it is larger than the sum of its proper divisors (1027783791).

1401523245 is a wasteful number, since it uses less digits than its factorization.

1401523245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31144972 (or 31144969 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1401523245 is about 37436.9235514886. The cubic root of 1401523245 is about 1119.0945181993.

Adding to 1401523245 its reverse (5423251041), we get a palindrome (6824774286).

It can be divided in two parts, 140 and 1523245, that added together give a triangular number (1523385 = T₁₇₄₅).

The spelling of 1401523245 in words is "one billion, four hundred one million, five hundred twenty-three thousand, two hundred forty-five".