1551253461 has 24 divisors (see below), whose sum is σ = 2191231584. Its totient is φ = 976013280.

The previous prime is 1551253433. The next prime is 1551253513. The reversal of 1551253461 is 1643521551.

It is not a de Polignac number, because 1551253461 - 2⁶ = 1551253397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551253061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297406 + ... + 302576.

It is an arithmetic number, because the mean of its divisors is an integer number (91301316).

Almost surely, 2^1551253461 is an apocalyptic number.

It is an amenable number.

1551253461 is a deficient number, since it is larger than the sum of its proper divisors (639978123).

1551253461 is a wasteful number, since it uses less digits than its factorization.

1551253461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489 (or 5470 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 1551253461 is about 39385.9551236224. The cubic root of 1551253461 is about 1157.6064052627.

The spelling of 1551253461 in words is "one billion, five hundred fifty-one million, two hundred fifty-three thousand, four hundred sixty-one".