5401624621 has 4 divisors (see below), whose sum is σ = 5482245952. Its totient is φ = 5321003292.

The previous prime is 5401624609. The next prime is 5401624633. The reversal of 5401624621 is 1264261045.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (5401624609) and next prime (5401624633).

It is a cyclic number.

It is not a de Polignac number, because 5401624621 - 2⁷ = 5401624493 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 (5401624021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40310565 + ... + 40310698.

It is an arithmetic number, because the mean of its divisors is an integer number (1370561488).

Almost surely, 2^5401624621 is an apocalyptic number.

It is an amenable number.

5401624621 is a deficient number, since it is larger than the sum of its proper divisors (80621331).

5401624621 is an equidigital number, since it uses as much as digits as its factorization.

5401624621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80621330.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 5401624621 is about 73495.7455979596. The cubic root of 5401624621 is about 1754.5865667908.

Adding to 5401624621 its reverse (1264261045), we get a palindrome (6665885666).

The spelling of 5401624621 in words is "five billion, four hundred one million, six hundred twenty-four thousand, six hundred twenty-one".