1553462421 has 16 divisors (see below), whose sum is σ = 2443542528. Its totient is φ = 859057200.

The previous prime is 1553462413. The next prime is 1553462423. The reversal of 1553462421 is 1242643551.

It is not a de Polignac number, because 1553462421 - 2³ = 1553462413 is a prime.

It is a super-3 number, since 3×1553462421³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553462423) 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, 1192485 + ... + 1193786.

It is an arithmetic number, because the mean of its divisors is an integer number (152721408).

Almost surely, 2^1553462421 is an apocalyptic number.

It is an amenable number.

1553462421 is a deficient number, since it is larger than the sum of its proper divisors (890080107).

1553462421 is a wasteful number, since it uses less digits than its factorization.

1553462421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386312.

The product of its digits is 28800, while the sum is 33.

The square root of 1553462421 is about 39413.9876312966. The cubic root of 1553462421 is about 1158.1556156290.

The spelling of 1553462421 in words is "one billion, five hundred fifty-three million, four hundred sixty-two thousand, four hundred twenty-one".